Which of the following is an elastic wave?
- Alight wave
- Bratio wave
- ✓sound wave
- Dmicrowave
Answer: C.
View full solution →Question types
Sound question types
44 questions across 5 question groups — pick any mix to generate a PHYSICS paper with step-by-step answer keys.
44
Questions
5
Question groups
5
Question types
01
MCQ
11 Q→02[1 Mark Question Answer]
2 Q→03[2 Mark Question Answer]
12 Q→04[3 Mark Question Answer]
15 Q→05[5 Mark Question Answer]
4 Q→Sample Questions
Sound questions
One sample from each question group in this chapter. Select any group above to see the full set with answer keys.
If the frequency of a wave is 25 Hz . the total number of compressions and rarefactions passing through a point in 1 second is:
- A25
- ✓50
- C100
- Dnone of these
Answer: B.
View full solution →The SI unit of frequency is
- ✓hertz
- Bgauss
- Cdecibel
- Dnone of these
Answer: A.
View full solution →The number of oscillations passing through a point in unit time is called:
- Avibration
- ✓frequency
- Cwavelength
- Damplitude
Answer: B.
View full solution →The wavelength is the linear distance between the:
- Atwo consecutive compressions
- Btwo consecutive rarefactions
- Cone compression and one rarefaction
- ✓both (a) and (b)
Answer: D.
View full solution →What kinds of the waves are produced in solids, liquids and gases?
What is meant by the term wave motion?
An electromagnetic wave has a time period of $4 \times 10^{-8} s$. Calculate its frequency in MHz.
The sonic boom of an aircraft has a time period of 0.00005s. Calculate the frequency of sound produced.
A bat emits an ultrasonic sound of frequency 0.25 MHz. Calculate the time in which one vibration is completed.
200 waves pass through a point in one second. Calculate the time period of wave.
Draw a displacement-time graph for water wave.
The diagram given below shows a displacement distance graph of a wave. If the velocity of wave is $160 ms-1$, calculate
1. wavelength
2. frequency
3. amplitude.
View full solution →1. wavelength
2. frequency
3. amplitude.
The distance between three consecutive crests of wave is 60 cm . If the waves are produced at the rate of $180 / min$, calculate
1. wavelength
2. time period
3. wave velocity.
View full solution →1. wavelength
2. time period
3. wave velocity.
The distance between one crest and one trough of a sea wave is 4.5 m . If the waves are produced at the rate of $240 / min$, calculate
1. time period
2. wave velocity.
View full solution →1. time period
2. wave velocity.
Two tuning forks A and B of frequencies 256 Hz and 192 Hz respectively are vibrated in air. If the wavelength of A is 1.25 m, calculate the wavelength produced by B.
A sound wave of wavelength $1 / 3 m$ has a frequency 996 Hz . Keeping the medium same, if frequency changes to 1328 Hz . Calculate
1. velcoity of sound
2. new wavelength.
View full solution →1. velcoity of sound
2. new wavelength.
From diagram given below calculate
1. velocity of $P$ and $Q$
2. frequency of $P$, when frequency of $Q$ is 512 Hz .
Assume that both wave are travelling in same medium.
View full solution →1. velocity of $P$ and $Q$
2. frequency of $P$, when frequency of $Q$ is 512 Hz .
Assume that both wave are travelling in same medium.
State four differences between the sound wave and the light wave.
Define the terms :
1.wavelength
2.amplitude
3.frequency.
1.wavelength
2.amplitude
3.frequency.
Describe an experiment to prove that material medium is necessary for the propagation of sound.
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