railway RRB Technician Grade 3 Mock Test 2024 Physics Waves Doppler effect

A man standing on a cliff hears the echo of his shout after 1 s. If the velocity of sound in air is 340 m/s, what is the distance between the man and the mountain from which his voice is reflected?

1

340 m

2

170 m

3

680 m

4

85 m

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