Oscillations and Waves-Speed of a Wave (NEET Physics): Questions 8 - 9 of 9

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Question number: 8

» Oscillations and Waves » Speed of a Wave

MCQ▾

Question

A man is standing between two parallel cliffs and fires a gun. If he hears first and second echoes after 1.5 s and 3.5s respectively, the distance between the cliffs is (Velocity of sound in air = 340 ms -1)

Choices

Choice (4) Response
a.

510 m

b.

850 m

c.

595 m

d.

1190 m

Question number: 9

» Oscillations and Waves » Speed of a Wave

MCQ▾

Question

The amplitude of a wave, represented by displacement equation y=1asinωt±1bcosωt will be.

Choices

Choice (4) Response
a.

a+bab

b.

a+bab

c.

a±bab

d.

a+bab

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