NEET2016Physics-Waves
NEET 2016 Physics Doppler Effect MCQ Question
Type: MCQ-numerical-Medium-Class 11
A siren emitting a sound of frequency 800 Hz moves away from an observer towards a cliff at a speed of 15 m s⁻¹. Then, the frequency of sound that the observer hears in the echo reflected from the cliff is (Take velocity of sound in air = 330 m s⁻¹)
A
838 Hz
B
885 Hz
C
765 Hz
D
800 Hz
Correct Answer
Option C
Detailed Explanation
Using the Doppler effect, the frequency heard by the observer is calculated considering the motion of the source and the observer.
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