Sound Test - 3...

Which of the following will remain unchanged when a sound wave travels in air or in water?

The sound intensity level of an ordinary conversation at 50 cm is nearly:

The sound carried by air from a sitar to a listener is a wave of following type

If the intensity of sound is doubled, the sound level will increase nearly by

Intensity or loudness depends upon which of the following factors?

The S.I unit of intensity of sound wave is

When a wave is refracted,

Two sound waves having two sinusoidal waveforms, but different wavelength and amplitude, are said to have

At STP the velocity of sound is minimum in

For 1⁰ F rise in temp, the velocity of sound in air increases nearly by

A sound wave reflected at the boundary will undergo a phase change on reflection at

When sound travels through air, the temperature

The velocity of sound in an ideal gas is dependent on change in

A stone is dropped in a lake by a person from a tower 500 m high. The sound of splash will be heard by the man after approximately, (speed of the sound in air is 340 m/s , g =10m/s²)

A transverse wave travels along the z-axis. The particles of the medium must move

Velocity of sound in a gas varies with pressure (p) as

A man hears the sound of lightning after 6 seconds. The distance of the cloud from the man is

Speed of sound in air is 332 m/s at STP. The speed of sound in hydrogen at STP will be

At what temperature will the velocity of sound in air be 3 times of its value at 0⁰ C?

Velocity of sound in a gas does not depend upon

The equation y = a cos² (2 π nt - 2 π x / ) represents a wave with

A wave is represented by x = 0.4 cos (8 t - y /2) where x & y in meters & t in sec. The speed of the wave is

A wave is represented by the equation y = 0.5 sin (10 t + x) meter. It is a traveling wave propagating along + x direction with velocity

The equation of a wave is represented by y = 10 ^{– 4} sin (100 t – x /10)m, then the velocity of a wave will be

Decibel is the unit of