Chapter 13 – Sound

Sound can travel through:

Voice of which of the following is likely to have minimum frequency:

Vibration in a body produce:

A shehnai produces sound from:

Drum produces sound from:

Frequency of oscillations is:

The unit of frequency is:

The frequency determines the of a sound.

When the amplitude is small, the sound produced is:

The ultrasound equipment works at frequencies:

Noise pollution causes:

Trees planted along the roads reduces the harmful effect of:

Number of vocal cords in human is:

Sound:

Sound:

Propagation of sound is fastest In:

Sound does not travel in:

Unwanted and unpleasant sounds are called:

Process of receiving sound vibrations and sensing them by brain is called :

Voice box has stretched string like parts, which vibrate to produce sound are called:

Large amplitude of sound vibrations will produce:

High frequency of sound vibrations will produce a:

Excess unwanted sounds is environment can cause:

The range of audible sound for human ear is:

The amplitude of the sound wave decides its:

If the amplitude becomes twice than the loudness of sound increases by a factor of:

In sitar sound Is produced by:

Sound is a kind of

The hearing range of human ear is

Pitch of sound is determined by its