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JEE Main Physics Class 11 Waves Part 1 Questions

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Question : 46

Total: 100

Two cars A and B are moving away from each other in opposite directions. Both the cars are moving with a speed of 20 ms‌–1 with respect to the ground. If an observer in car A detects a frequency 2000 Hz of the sound coming from car B, what is the natural frequency of the sound source in car B?
(speed of sound in air = 340 ms‌–1)

[9 April 2019 II]

2250 Hz
2060 Hz
2300 Hz
2150 Hz

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