PHYSICS 703 -MODULE TEST (A)

(a)   is the region in air where the particles are compressed together.

(a)   is the region in air where the particles are spread apart.

(a)   is a characteristic that differentiates a shrill sound from a flat sound.

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

(a)   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