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JEE MAIN 2023

29-01-2023 S1

Question

A person observes two moving trains, ‘A’ reaching the station and ‘B’ leaving the station with equal speed of 30 m/s. If both trains emit sounds with frequency 300 Hz, (Speed of sound : 330 m/s) approximate difference of frequencies heard by the person will be :

Select the correct option:

A

33Hz

B

55Hz

C

80Hz

D

10Hz

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Solution

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