Oscillations and Waves-Doppler Effect in Sound (AIIMS Physics): Questions 1 - 4 of 5

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Question number: 1

» Oscillations and Waves » Doppler Effect in Sound

MCQ▾

Question

A vehicle, with a horn of frequency n is moving with a velocity of 30ms in a direction perpendicular to the straight line joining the observer and the vehicle. The observer perceives the sound to have a frequency n+n1 . Then –

(Take velocity of sound in air 300 m/s)

Choices

Choice (4) Response

a.

n1=0.1n

b.

n1=0

c.

n1=2n

d.

n1=10n

Question number: 2

» Oscillations and Waves » Doppler Effect in Sound

Appeared in Year: 2002

MCQ▾

Question

A siren emitting sound of frequency 800 Hz is going away from a static listener with a speed of 30ms . Frequency of sound to be heard by the listener is (Velocity of sound =330ms )

Choices

Choice (4) Response

a.

644.8 Hz

b.

733.3 Hz

c.

481.2 Hz

d.

286.5 Hz

Question number: 3

» Oscillations and Waves » Doppler Effect in Sound

Appeared in Year: 1999

MCQ▾

Question

A siren emitting sound of frequency 500 Hz is going away form a static listener with a speed of 50msec . The frequency of sound to be heard directly from the siren is –

Choices

Choice (4) Response

a.

434.2 Hz

b.

484.2 Hz

c.

256.5 Hz

d.

589.3 Hz

Question number: 4

» Oscillations and Waves » Doppler Effect in Sound

MCQ▾

Question

A vehicle, with a horn of frequency n is moving with a velocity of 45ms in a direction perpendicular to the straight line joining the observer and the vehicle. The observer perceives the sound to have a frequency n+n1 . Then – (Take velocity of sound in air 300 m/s)

Choices

Choice (4) Response

a.

n1=13n

b.

n1=0.13n

c.

n1=0

d.

n1=1.3n

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