Which of the following satements is true with refrence to 39 Sound 39 1 The velocity of sound in air...........

Science Affairs Physics

Which of the following satements is true with refrence to 'Sound'

1. The velocity of sound in air increases with increase of temperature.

2. The velocity of sound in air is not affected by the change in amplitude and frequency.

3. The velocity of sound is depend on pressure.

Select the correct answer using the code given below:

1 and 2 only

1 and 3 only

2 and 3 only

1, 2 and 3

Sound can propagate through a medium such as air, water and solids as longitudinal waves and also as a transverse wave in solids.
The sound waves are generated by a sound source, such as the vibrating diaphragm of a stereo speaker.
The sound source creates vibrations in the surrounding medium. As the source continues to vibrate the medium, the vibrations propagate away from the source at the speed of sound, thus forming the sound wave. At a fixed distance from the source, the pressure, velocity, and displacement of the medium vary in time.
At an instant in time, the pressure, velocity, and displacement vary in space. The velocity of sound is independent on pressure.