AIPMT MAINS2009Physics-Waves
AIPMT MAINS 2009 Physics Doppler Effect MCQ Question
Type: MCQ-numerical-Medium-Class 11
The driver of a car travelling with speed 30 m/sec towards a hill sounds a horn of frequency 600 Hz. If the velocity of sound in air is 330 m/s, the frequency of reflected sound as heard by driver is:
A
555.5 Hz
B
720 Hz
C
500 Hz
D
550 Hz
Correct Answer
Option B
Detailed Explanation
Using the Doppler effect formula for sound, the frequency heard by the driver is calculated as 720 Hz when the source and observer are moving towards each other.
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