MEDIUM
Earn 100

Define 'timbre' or quality of sound.

Important Questions on Sound

EASY
When sound is refracted from air to water, which of the following will remain unchanged?
EASY
Consider the following statements :
(A) The velocity of sound in air increases due to presence of moisture in it.
(R) The presence of moisture in air lowers the density of air.
In the above statements:
EASY
If the speed of wave is 250 m/s and its wavelength is 50 cm then the frequency will be:
EASY
The wave having compression and rarefaction is known as
EASY
The speed of sound in air at NTP is 332 m/s. If air pressure becomes four times the normal then the speed of sound waves will
EASY
If the speed of wave is 350 m/s and its wavelength is 100 cm then the frequency of the wave will be
EASY
Waves inside a gas are
MEDIUM

The given graph shows the displacement versus time relation for a disturbance travelling with velocity 1500 m/s. The wavelength of the disturbance will be

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HARD

The sound of same pitch and loudness are distinguished from one another by their

MEDIUM
Consider the following statements and select the correct alternative: Statement (A): The frequency of the sound wave whose wave length is 1.5 cm with speed 339 m/s is 22600 Hz. Statement (B): The given sound is audible to human beings.
EASY
The speed of a wave in a medium is 760 ms-1.If 3600 waves are passing through a point in the medium in 2 minutes then its wavelength is 
MEDIUM

The linear distance between a consecutive compression and rarefaction in longitudinal wave is

EASY
The velocity of sound wave in a given medium is V when its frequency is ν. The velocity, when the frequency changes to 5ν is :
HARD

For the wave shown in figure, calculate the frequency and wave length of the wave if its speed is 320 ms–1.

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MEDIUM
Two different instruments (say, guitar and harmonium), playing the same music, their sound appears different though they play same frequency, because:
EASY
Which wave property determines the loudness of a sound?
EASY
How is loudness related to amplitude?
EASY
What will happen to the loudness of sound if the distance between the source and the listener is doubled?
MEDIUM
Write three differences between a musical sound and noise.
EASY

Rupesh was studying for his exams. His neighbour Berry was playing tabla. Rupesh was getting disturbed. He asked Berry to play tabla softly. Berry followed his advice. Why is soft sound produced when we strike a drum softly?