Question

1 What is a wave? Define a transverse wave?
2 What is the range of frequencies associated with :
(a) Infra sound? (b) Ultrasound?
3 How does the sound produced by a musical instrument, reach your ears?

Answer 1

Answer:

Explanation :

Answer 1) Wave - A wave is a travelling disturbance from a vibrating or oscillating source. As a wave travels, it carries energy along with it in the direction of its propagation.

A transverse wave is a wave in which the particles of the medium move in the direction perpendicular to the direction in which the wave moves. Examples of transverse waves are water waves and electromagnetic waves.

 

Answer 2) Range of frequencies associated with Infra sound : 1 Hz to 20 Hz

Range of frequencies associated with Ultra sound : 2 x 104 Hz to 1010 Hz.

Answer 3)The sound produced by the musical instrument makes the molecules of air vibrate. These vibrations are carried forward by the other molecules till they reach our ear. Since sound requires a medium to propagate, therefore, sound cannot travel between astronauts on the moon, hence they use radio transmitters.

                 I hope this answer will help you................