sonometer experiment class 11

Labkafe Blog

Get in Touch

Get A Free Lab Consultation

Sonometer experiment ‒ objective, procedure, and tips | labkafe.

Previously, we have talked about what a sonometer is and why we use it in class 11-12 physics labs all around. Now that you know about the sonometer theory, we will tell you how to do the sonometer experiment today. This is a very important, and sometimes quite difficult experiment for students of classes XI XII of CBSE ICSE IGCSE State Boards. Nevertheless, if you follow the procedure given below and note the insights from our experts, you will be able to do it with good results.

A sonometer is one of the most important   lab equipment   in most high school level physics labs. It helps the students understand how a stretched wire produces sound, and how exactly that sound can be precisely changed. A sonometer, derived from an ancient instrument called monochord, connects music to mathematics. In real life it is used to tune various musical instruments.

Objectives of the Sonometer Experiment

• Study and understand the relationship between the vibrating frequency and the length of a given wire under constant tension using a monochord sonometer and thereby plot the  f  vs  1/l  graph and study its characteristics.
• Study and understand the relationship between the length of a given wire and the tension applied to it for a constant frequency using a monochord sonometer and thereby plot the  l2  vs  T  graph and study its characteristics.

Explanation : Basically, in the sonometer experiment what we will do is this. First, we will set up the sonometer with the given wire and weights. Then we will try to match the vibrating tones of a tuning fork and the wire, at which point they will resonate together. The best way to do this is to place a piece of paper on the taut wire and see at which length the wire vibrates so much that it throws off the paper. 

We would record those data about the length, tension, and frequency ‒ and then we’d proceed with another setting of the same. At the end of the experiment, we will plot all of those data on graph papers so that we can figure out how they are related to each other.

Let’s move forward to the sonometer experiment procedure.

Procedure of the Sonometer Experiment

A. equipment and material.

• A sonometer apparatus of good quality (  you can get one here   )
• A given steel of nichrome wire ‒ about 1.5 meter of it. They are generally quite thin, like 0.5 mm. Guitar wires, obviously, produce the best results.
• A weight hanger suitable to hold up to 2 kgs
• A set of weights from 100gm to 1 kg
• A   set of tuning forks   with known frequencies
• A rubber pad to hit the tuning fork with
• Some pieces of paper

B. Setting up the experiment

A sonometer is basically a long wooden box with a system on top to mount a wire tightly. You will need to set this up at the beginning of the sonometer experiment.

• Place the sonometer box on top of your   dry lab workbench   in your physics practical class. Place it in a way so that the end with the pulley is flush with the open side of the table, so that something can hang from the pulley.
• Get the wire you have to experiment with and verify that you have enough length of it. You’ll need about one and a half meters of it. The teacher will already know the mass per unit length of the material of the wire, but you may have to figure it out yourself using a scale and   a precision balance   . 
• Attach one end of the wire to the hook at the end of the sonometer apparatus. Make sure it is strongly attached.
• Attach the weight hanger to the other end of the wire.
• Sling the wire over the pulley on the other end of the sonometer. Place a little weight on the weight hanger so that the wire is stretched tightly over the wood box.
• Place the bridges on the sonometer, under the wire, so that they hold up the wire between them and the wire is stretched tightly between them. Pull them apart to the positions farthest from each other (at the end of the scale).

That’s all there is to it ‒ your sonometer is all set up now for work.

C. Step-by-step experiment process

Now that you have your sonometer all set up and ready, you can begin the sonometer experiment. Follow these steps to do it properly. 

• Take your notebook and prepare two tables like those given below. You can note all your experiment data here.
• Note: if you are working with a steel wire, we recommend starting with 500 grams. You can increase it to nearly two kilos. But this range would be different for other kinds of wires. Please ask your lab instructor to advise you on the tensile strength of the wire.
• Take a small rectangular piece of paper (about the length of your finger) and fold it to make it an inverted V. Mount it in the middle of the wire so it hangs there loosely.
• Take a tuning fork and note down its frequency.
• Hit the tuning fork with the rubber pad to set it vibrating.
• Touch the handle of the vibrating tuning fork to the sonometer box. The wire will start vibrating in response to the vibrations coming from the tuning fork.
• Chances are, that is not what you’ll get at first. It will take a lot of tries to get the perfect resonance. The nature of the wire also changes the difficulty of the experiment. 

• In reality, it’s nigh impossible to get a so-called sweet spot. All you’ll get is a region. So, you will have to take two length readings,  l1  and  l2 . Take one reading while you are decreasing the gap between the bridges and the wire starts vibrating, and take the other reading while you are increasing the gap and the wire stops vibrating. Then the calculation length  l  would be the mean of these two measures.
• Note down the positions of the bridges from the scale beside them. Also note the weight.
• Vary the weight and perform the same process again and again, to get some satisfactory results with the same tuning fork.
• Now keep a good amount of weight fixed in the hanger (we recommend 1 kg for a steel wire). With that unchanged, use up all the other tuning forks from the set and do the same process.

Sonometer Experiment Data

To perform this physics class 11 experiment, you will need to record the data in a specific format. Please make the following tables in your notebook and use the data from the experiment above to fill it up.

You can take as many data rows as you need, not only 4. Now plot the data in the graphs ( f  vs  1/l ) and ( l2  vs  T ). Both graphs should come out to be almost near straight lines. 

We have taken some measurements in our system and the results are as follows:

From the above graphs, you can see that the results come more or less in a straight line. This shows clearly how the length of a vibrating wire, the tension applied to it, and its frequency depend upon each other. 

All the equipment you need to perform the sonometer experiment can be found in our   CBSE/ICSE/State board lab equipment packages   . The physics lab equipment package we have has the sonometer apparatus (teakwood), various kinds of wires, weights, and tuning forks. 

It has been a pleasure describing the sonometer theory and practical to you! Please leave your thoughts and suggestions in the comment section given below. Happy learning!

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

Save my name, email, and website in this browser for the next time I comment.

Suggested Reads

• Trending Categories

• Selected Reading
• UPSC IAS Exams Notes
• Developer's Best Practices
• Questions and Answers
• Effective Resume Writing
• HR Interview Questions
• Computer Glossary

Relationship between frequency and length of wire under constant tension using Sonometer

Introduction.

In the experiment for studying the relationship that exists between length and the tension with respect to the frequency of the sound wave, the device of sonometer is important. It is a device that follows the Law of tension, where it is directly proportional to the frequency associated with the given string. This device is a hollow rectangular box made out of wood and has a length of more than 1 meter. To the end of the sonometer, there lies a hook and on the other side, it has a pulley. This experiment is conducted to verify the Law of tension with the help of the device sonometer.

Aim of the experiment and materials required

The aim of this experiment is to show whether the Law of tension is truly exhibited by the sonometer or not and the relationship that lies between tension and length for the given wire having constant frequencies. However, in conducting this experiment, several materials are required that include the followings, device of sonometer, screw gauge, rubber pad, paper rider, slotted weights of 7 and 1/2 kg, meter scale, hanger 1/2 kg and lastly, a set for 8 tuning forks (Chauhan et al. 2021). This experiment will not only prove the Law of tension but will also help in learning the use of the device sonometer.

Theory and formula

The theory that is applied in this experimentation shows a few conditions, suppose the given string is plucked from its centre, which is stretched and fixed by two pints at each end, then there occurs vibration. This vibration seems to move out in the exact opposite direction along with the given string (Chauhan et al. 2021). This occurs due to the generation and travelling of the transverse wave through the string. For example, if the length of the string is l, and it is stretched with a tension (T) and has a mass (m) per unit length, then the frequency of the vibration is expressed as, $\mathrm{F\: = \:1/2l\sqrt{T/m}}$ . In this expression, F is considered as the constant, and in turn, it states that, m and $\mathrm{\sqrt{T/1}}$ is also constant.

Figure 1: Study of the Relation between the Length of Given Wire and Tension for Constant Frequency Using Sonometer

In conducting this experiment, certain steps are to be followed as follows. The first step states the setting of the sonometer on the tabletop, giving it a weight of 4 kg. The hanger used in this experiment needs to have a maximum weight that is suitable for carrying out the experiment. However, for this experiment, a frictionless pulley is used. Need to move the wooden bridges in order to maximize the length of the given wire. Selections of 256 Hz for forks are set, that is to strike against the rubber pad leading to generating vibrations. Wire AB is vibrated by plucking. Following these procedures, record the changes that are noticed at the time of observation.

Observations, Calculations and Model graph

Observations during this experiment are to be recorded in a tabular format as given below. Need to consider the frequency of the tuning fork F, at constant, which is 256 Hz. Record the tension and the change in length for the given experiment.

Figure 2: Relation between Tension T (N) and Length $\mathrm{l^2 \:(cm^2)}$

In order to calculate, certain things to be considered, one needs to find the length (L) and record the mean length in the column. Identify the $\mathrm{l^2}$ and $\mathrm{l^2/T}$. In the next step, I need to plot T and l2 along the x-axis and y-axis.

Figure 3: Observation table Variation of resonant length with tension

Precautionary measures and possible sources of error

Certain precautionary measures are to be used, the first is to make use of frictionless pulleys, and the wire needs to be of uniform cross-section. Usage of rubber pad is necessary, for calculations, length can be increased and decreased (Amrita.olabs.edu, 2022). Rigid wire and sharp wooden bridges should not be used. Correct weights should not be used.

In this tutorial, a detailed discussion has been conducted on the experiment that defines the Law of tension. However, this experiment makes use of a sonometer, which is quite important for recoding pf the vibrations that are generated by plucking the middle part of the given string. However, specific procedures are to be maintained with certain precautionary measures, as, if errors lie during the experiment, then readings might not be appropriate.

Q1. What are a sonometer and its usage in daily life?

Ans. Sonometer is a device that is used for defining the intricate relationship that exists between the frequencies for the sound produced by the string at the time of plucking in the experiment. The device sonometer is used for diagnostic purposes, such as to measure density, tension and frequency for vibrations. This device is used in identifying the density of bone and hearing capacity.

Q2. What is the law of tension?

Ans. Law of tension is defined as the prime frequency of vibrations of the respective string that is directly proportional to the square root of tension, when the length of vibration and mass per unit length is considered to be a constant. It is expressed as $\mathrm{v\:\varpropto\:1/l}$, where, l is the length.

Q3. What is defined as the pitch of the sound and what factors affect its pitch?

Ans. Pitch of sound can be defined as the sound sensations that are perceived by the human ear, depending upon the aspects of frequency of vibrations. The factors that are responsible for affecting the pitch of sound includes, tension (T), mass per unit length and lastly, length (L).

• Related Articles
• Relationship between Speed and Frequency of Alternator
• Electric Traction: Calculation of Sag and Tension for Trolley Wire
• Difference between Tension Headache and Cluster Headache
• Difference between Earth Wire and Neutral Wire
• Relationship between AI and Data
• Detergents and Surface Tension
• Difference Between Constant and Control
• Tension Force
• Surface Tension
• Difference between Solid and Stranded Wire
• Difference Between ACH and Wire Transfer
• Explain the relationship between sanitation and disease.
• Relationship between ML and the Scientific Method
• Which has less electrical resistance: a thin wire or a thick wire (of the same length and same material)?

Kickstart Your Career

Get certified by completing the course

NCERT Solutions for Class 6, 7, 8, 9, 10, 11 and 12

To Study the Relation Between the Length of a Given Wire and Tension for Constant Frequency Using Sonometer

November 28, 2016 by Bhagya

Physics Lab Manual NCERT Solutions Class 11 Physics Sample Papers

Aim  To study the relation between the length of a given wire and tension for constant frequency using sonometer.

Apparatus A sonometer, a set of eight tuning forks, 1\2 kg hanger, seven 1\2 kg slotted weights, rubber pad, paper rider, metre scale, screw gauge.

Procedure  1. Repeat steps 1 to 13 of previous part with a tuning fork of frequency 256 Hz and load 4 kg. 2. Remove slotted weights one by one to reduce load to 3.5 kg, 3 kg,……, 1 kg and repeat above steps with same tuning fork. 3. Record your observations as given below.

Precautions 

• Pulley should be friction less.
• Wires used should be kink less and of uniform cross-section.
• Loading of wires should not be beyond elastic limit keep max. load = one-third of breaking load.
• Tuning fork should be vibrated by striking its prongs against soft rubber pad.
• Readings for length decreasing and increasing should be noted and their mean used in calculations.
• To transfer vibrations of the tuning fork to the wire through sonometer board, lower end of handle of tuning fork should be touched gently with sonometer board.
• Weight of hanger should be included in the load.
• Load should be removed after the experiment.

Sources of error 

•  Wire may not be rigid and of uniform cross-sectional area.
• Pulley may not be friction less.
• Weights used may not be correct.
• Bridges may not be sharp.

Question. 1. Define superposition of waves. Answer. The phenomena of intermixing of two or more waves to produce a new wave, is called superposition of waves.

Question. 2. State superposition principle. Answer. It states “the resultant displacement of a particle is equal to the vector sum of the individual displacements given to it by the superposing waves.

Question. 3. Define stationary waves. Answer. Superposition of two waves of same frequency and same amplitude and travelling with same velocity in opposite direction produces stationary waves.

Question. 4. Under what situation are stationary waves produced ? Answer. Stationary waves are produced when a reflected wave gets superposed with its incident wave.

Question. 5. Define nodes. Answer. In stationary wave, the regions of zero displacement and maximum strain, are called nodes. They are denoted by N.

Question. 6. What is the distance between two consecutive nodes ? Answer. The distance between the two consecutive nodes is equal to half the wavelength of the stationary waves. NM=λ/2

Question. 7. Define antinode. Answer. In a stationary wave, the regions of maximum displacement and zero strain, are called antinodes. They are denoted by A.

Question. 8. What is the distance between two consecutive antinodes ? Answer. The distance between two consecutive antinode is equal to half the wavelength of the stationary waves. AA=λ/2

Question. 9. What is the distance between a node and nearest antinode ? Answer. The distance between a node and nearest antinodes is equal to quarter wavelength of the stationary waves. NA=λ/4

Question. 10. How can transverse stationary waves be produced in a stretched string ? Answer. Transverse stationary waves can be produced in a string by stretching it with a tension and fixing it at its two ends. When plucked in the middle, transverse stationary waves are produced in it.

Question. 11. What is fundamental frequency of a vibrating body ? Answer. The least frequency of a vibrating body, is called its fundamental frequency. It is also called first harmonic.

Question. 12. What does the number of a harmonic represent ? Answer. The number of a harmonic gives the ratio of its frequency with fundamental frequency.

Question. 13. What is an overtone ? Answer. All frequencies of a vibrating body, other than the fundamental, are called overtones.

Question. 14. How are the overtones numbered ? Answer. They are numbered in order of their increasing frequency after the fundamental.

Question. 21. How can longitudinal stationary waves be produced in a rod ? Answer. Longitudinal stationary waves can be produced in a rod by clamping it and then rubbing it along its length by a resined cloth.

Question. 22. Describe different cases of vibration of a clamped rod. Answer. Different cases are : 1. Rod clamped at one end, —> l = λ/4. 2. Rod clamped in the middle, —> l=λ/2. 3. Rod clamped both ends, —> l = λ/2. 4. Rod clamped at a point at quarter length distance from one end—> l = λ.

Question. 23. Define pitch of a sound. Answer. It is a sensation which makes us feel whether the sound is shrill or grave (hoarse).

Question. 24. On what factor pitch depends ? Answer. Pitch depends upon frequency of sound.

Question. 25. Which sound is shrill ? Answer. A sound of more frequency has a high pitch. The sound is shrill.

Question. 26. Give some example of shrill sound. Answer. Sound produced by the humming of a mosquito is shrill.

Question. 27. Which sound is grave (or hoarse) ? Answer. A sound of less frequency has a low pitch. The sound is grave (or hoarse).

Question. 28. Give some example of grave (hoarse) sound. . Answer. The sound produced by the roaring of a lion is grave (or hoarse).

Question. 29. What is a tuning fork? Answer. It is a source of standard frequency useful for sound experiment with sonometer or resonance tube.

Question. 30. How do its different parts vibrate ? Answer. Its prongs vibrates in transverse mode, while its handle vibrates in longitudinal mode.

Question. 31. How is it that its prongs stop vibrating simply on touching with a finger, while its handle continues vibrating even when held in hand tightly ? Answer. It is because, vibrations of prongs are transverse and those of handle are longitudinal.

Question. 32. What is a sonometer ? Answer. It is a hollow and rectangular wooden box.

Question. 33. Why are there two holes in the side of the sonometer ? Answer. To make air vibrating inside the box to come in contact of outside air to enhance vibrations.

Question. 34. How sonometer board helps in experiment ? Answer. It increases loudness of sound produced by the vibrating wire.

Question. 35. What is the nature of vibrations of the sonometer board ? Answer. The vibrations of sonometer board are forced vibrations.

Question. 36. What is the nature of vibrations of the tuning fork ? Answer. The vibrations of the tuning fork are free vibrations.

Question. 37. What is the nature of vibrations of the sonometer wire when the rider falls ? Answer. The vibrations are resonant vibrations.

Question. 38. What is meant by resonant vibrations of the wire ? Answer. It means that frequency of the wire equals tuning fork frequency.

End correction  Rayleigh found that reflection of sound at open end of the tube does not take place from the position of the edge of the tube but from a slightly higher region. It is because the tube medium (air) continues even beyond the edge. According to Rayleigh, the distance of the region of reflection from the edge of the tube is 0.3 D, where D is the internal diameter of the tube. This distance is called end correction and is represented by the symbol x, i.e., x = 0.3 D. Applying end correction, we get l + x = λ/4 λ = 4(l + x) Hence, formula for velocity of sound becomes, υ = 4 v(l +x).

Free Resources

NCERT Solutions

Quick Resources

• Latest Updates

Sonometer – Law of Tension & Law of Length

Physics Practicals Class 11

Sonometer – Law of Tension & Law of Length

• Teach science experiments in a gamified way
• Boost conceptual clarity and knowledge retention
• Aligned with National Education Policy 2020
• Helpful in getting NAAC accreditation
• CBSE, ICSE, and state boards aligned curricula
• Engaging simulations with easy-to-teach instructions

About Simulation

• During the simulation, you will gain a comprehensive understanding of resonance and resonant frequency, exploring the laws of length and tension using the sonometer.
• Throughout the process, you can learn how the natural frequency aligns with the transmission frequency, facilitating energy transfer.
• At the end of the simulation, you will acquire the ability to correlate the frequency of vibration with both the resonating length of the string and its tension.
• Furthermore, you can grasp the concept of resonance and resonant frequency, deepening your understanding of vibrational phenomena.

• Additionally, you will comprehend the fundamental laws governing tension, mass, and length concerning the stretched string, enhancing your knowledge of mechanical dynamics.

Simulation Details

Description

Sonometer consists of a hollow rectangular wooden box of more than one-meter length, with a hook at one end and a pulley at the other end. One end of a string is fixed at the hook and the other end passes over the pulley. A weight hanger is attached to the free end of the string. Two adjustable wooden bridges are put over the board so that the length of string can be adjusted.

Production of transverse waves in stretched strings:

If a string of length l having mass per unit length m is stretched with a tension T, the fundamental frequency of vibration f is given by

Laws of transverse vibrations on a stretched string:

Law of Length: The frequency of vibration of a stretched string varies inversely to its resonating length (provided its mass per unit length and tension remain constant.)

Law of Tension: The frequency of vibration of a stretched string varies directly as the square root of its tension, (provided its resonating length and mass per unit length of the wire remains constant).

Requirements for this Science Experiment

• Paper rider
• Weight hanger
• Tunning forks
• Slotted weights

Why Choose SimuLab for Science Practicals?

Try SimuLab

A 3D virtual science lab (physics lab, chemistry lab, and biology lab) that helps students learn science experiments easily.

Explore SimuLab in Detail

Elevate your institute’s standard and quality of teaching with our cutting-edge 3d virtual science lab. improve learning experience and academic results., unlock your free science experiments.

I agree with the company's data policy.

Select User Type Teacher Student Others

Select Country ... United States Canada Mexico United Kingdom Afghanistan Albania Algeria American Samoa Andorra Angola Anguilla Antigua and Barbuda Argentina Armenia Armenia Aruba Australia Austria Azerbaijan Azerbaijan Bahamas Bahrain Bangladesh Barbados Belarus Belgium Belize Benin Bermuda Bhutan Bolivia Bonaire Bosnia and Herzegovina Botswana Bouvet Island (Bouvetoya) Brazil British Indian Ocean Territory (Chagos Archipelago) British Virgin Islands Brunei Darussalam Bulgaria Burkina Faso Burundi Cambodia Cameroon Cape Verde Cayman Islands Central African Republic Chad Chile China Christmas Island Cocos (Keeling) Islands Colombia Comoros Congo Congo Cook Islands Costa Rica Cote d'Ivoire Croatia Cuba Curaçao Cyprus Cyprus Czech Republic Denmark Djibouti Dominica Dominican Republic Ecuador Egypt El Salvador Equatorial Guinea Eritrea Estonia Ethiopia Falkland Islands (Malvinas) Faroe Islands Fiji Finland France French Guiana French Polynesia French Southern Territories Gabon Gambia Georgia Germany Ghana Gibraltar Greece Greenland Grenada Guadeloupe Guam Guatemala Guernsey Guinea Guinea-Bissau Guyana Haiti Heard Island and McDonald Islands Holy See (Vatican City State) Honduras Hong Kong Hungary Iceland India Indonesia Iran Iraq Ireland Isle of Man Israel Italy Jamaica Japan Jersey Jordan Kazakhstan Kazakhstan Kenya Kiribati Korea Korea Kuwait Kyrgyz Republic Lao People's Democratic Republic Latvia Lebanon Lesotho Liberia Libyan Arab Jamahiriya Liechtenstein Lithuania Luxembourg Macao Macedonia Madagascar Malawi Malaysia Maldives Mali Malta Marshall Islands Martinique Mauritania Mauritius Mayotte Micronesia Moldova Monaco Mongolia Montenegro Montserrat Morocco Mozambique Myanmar Namibia Nauru Nepal Netherlands Netherlands Antilles New Caledonia New Zealand Nicaragua Niger Nigeria Niue Norfolk Island Northern Mariana Islands Norway Oman Pakistan Palau Palestinian Territory Panama Papua New Guinea Paraguay Peru Philippines Pitcairn Islands Poland Portugal Puerto Rico Qatar Reunion Romania Russian Federation Rwanda Saint Barthelemy Saint Helena Saint Kitts and Nevis Saint Lucia Saint Martin Saint Pierre and Miquelon Saint Vincent and the Grenadines Samoa San Marino Sao Tome and Principe Saudi Arabia Senegal Serbia Seychelles Sierra Leone Singapore Sint Maarten (Netherlands) Slovakia (Slovak Republic) Slovenia Solomon Islands Somalia South Africa South Georgia & S. Sandwich Islands Spain Sri Lanka Sudan Suriname Svalbard & Jan Mayen Islands Swaziland Sweden Switzerland Syrian Arab Republic Taiwan Tajikistan Tanzania Thailand Timor-Leste Togo Tokelau Tonga Trinidad and Tobago Tunisia Turkey Turkey Turkmenistan Turks and Caicos Islands Tuvalu U.S. Virgin Islands U.S. Minor Outlying Islands Uganda Ukraine United Arab Emirates Uruguay Uzbekistan Vanuatu Venezuela Vietnam Wallis and Futuna Western Sahara Yemen Zambia Zimbabwe

Talk to our experts

1800-120-456-456

In a sonometer experiment, resonance occurs when the length of the wire between bridges is $20\,cm$ and tuning fork of frequency $300\,Hz$ excites the vibrations. If a tuning fork of frequency $400\,Hz$ is used, thin the resonant length of the wire will be A. 10 cm B. 15 cm C. 20 cm D. 25 cm

• Question Answer
• In a sonometer experiment reso...

Repeaters Course for NEET 2022 - 23

• Physics Practicals
• Physics Viva Questions With Answers
• physics class 11 viva questions with answers
• class 11 to study the relation between the length of a given wire and tension for constant frequency using sonometer viva questions

Physics Practical Class 11 To study the relation between the length of a given wire and tension for constant frequency using a sonometer. Viva Questions with Answers

1) If a particle is in simple harmonic motion, its acceleration is inversely proportional to its displacement from the mean position. Is it true or false?

The above statement is false because the acceleration of the particle moving with simple harmonic motion is directly proportional to the displacement of the particle from the mean position.

2) What should be the length of the string in order to double the period of a simple pendulum?

According to the formula of periodic time, tp = 2п√L/g

Hence, then the length should be quadrupled if the period is doubled.

3) What is Simple Harmonic Motion?

A repetitive back and forth movement of an object through an equilibrium position is known as simple harmonic motion. The movement should be such that the extreme displacement on one side of the centre position is equal to the extreme displacement on the other side.

To complete each vibration, the time interval will be the same.

4) What is a Sonometer?

A sonometer is a device that is used to demonstrate the relationship between the frequency of the sound that is produced by the string when it is plucked.

5) What is the Law of Length?

As long as the tension of the string and the mass per unit length are constant, the frequency of the vibration of a string is inversely proportional to the resonating length; this is the statement of the Law of Length.

6) What is the Law of Tension?

As long as the mass per unit length and the resonating length of the string is constant, the frequency of vibration of a string is directly proportional to the square root of its tension; this is the statement of the Law of Tension.

7) What is the Law of Mass?

As long as the tension and length are constant, the frequency of vibration of a string is inversely proportional to the square root of its mass per unit length; this is the statement of the Law of Mass.

8) What are the uses of a sonometer?

As we know, to demonstrate the relationship between the frequency of the sound that is produced by the string when it is plucked, a device is used, which is called a sonometer.

Hence, the following can be determined using a sonometer:

• The frequency of the tuning fork
• The frequency of alternating current
• The tension in the string
• The unknown mass of a hanging object.

9) What do you mean by standing wave?

The combination of two waves obtained due to interference, having the same amplitude and frequency and moving in opposite directions is known as a standing wave. The standing wave is also identified as the stationary wave.

10) Which material is used for sonometer wire?

Soft iron is used to construct the wire in the sonometer.

• Practical Procedure
• Vibration of Strings and Air Columns
• Important Questions
• Mark Wise Questions

Stay tuned to BYJU’S and Fall in Love with Learning!

Leave a Comment Cancel reply

Your Mobile number and Email id will not be published. Required fields are marked *

Request OTP on Voice Call

Post My Comment

Register with BYJU'S & Download Free PDFs

Register with byju's & watch live videos.