A person in front of a hill at a distance 337.5 m fires a bullet. If he hears an echo after 2.25 s, then the velocity of sound will be
A person in front of a hill at a distance 337.5 m fires a bullet. If he hears an echo after 2.25 s, then the velocity of sound will be
A. 150 m/s
B. 600m/s
C. 300 m/s
D. 350 m/s
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