Sound Test - 9...

‘The angle of incidence is equal to the angle of reflection’ is one of the law of reflection of

The good directional property of ultrasound waves are used for:-

A person clapped his hands near a cliff and heard the echo after 5 sec. What is the distance of the cliff from the person, if the speed of the sound V is taken as 346 ms^-1 ?

Which of the following statement is true?
(A) The frequency of man’s voice more than that of woman’s voice.
(B) Repeated claps of thunder in quick succession are called rolling of thunder.
(C)Timbre is a typical feature of a sound which enables us to distinguish between the sounds of same loudness and pitch.

During a thunderstorm, one observes lightning first and then hears the thunder, though both occur simultaneously. This is because

Principle of reflection of sound is used in:-

Match the following with correct response.
(1) Echo
(2) Reverberation
(3) SONAR
(4) Sound board

(A) Bouncing back of sound
(B) Sound Navigation & Ranging
(C) Persistence of sound due to repeated reflection
(D) Concave surface

Match the following with correct response.

Which part of human ear converts sound vibrations into electrical signals

The eardrum is a