PHYSICS 703 -MODULE TEST (A)

______ is the region in air where the particles are compressed together.

______ is the region in air where the particles are spread apart.

______ is a characteristic that differentiates a shrill sound from a flat sound.

______ is the characteristics of sound which allows us to distinguish between two sounds of the same pitch and loudness.

______ is sound navigation and ranging.

Calculate the minimum distance at which the reflecting surface should be present for occurrence of an echo. Speed of sound in air= 310ms· and minimum time required to hear an echo = 0.1 second.

Explain the propagation of sound.

How is sound produced?

Time period is the time taken by the wave to complete one circulation.

• True

• False

Sound is produced when an object shakes rapidly to and fro motion about its mean position.

• True

• False