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Select the correct alternative :
We can distinguish a shrill sound from a flat sound by its
Explain the terms 'compressions' and 'rarefactions' of a wave. What type of waves consist of compressions and rarefactions.
Which of the following frequency of sound can be generated by a vibrating simple pendulum as well as by the vibrating vocal cords of a rhinoceros ?
Complete the following sentences :
Sound cannot travel through __________, but it requires a ___________.
How is sound perceived by us?
Consider the statement given below and choose the correct option.
Assertion: When lightning strikes, the sound is heard a little after the flash is seen.
Reason: The velocity of light is greater than that of the sound.
Why is the ceiling and wall behind the stage of good conference halls or concert halls made curved?
Explain the types of mechanical waves.
Name the waves used for sound ranging. State one reason for their use.