Green Warrior Class 9 Other

Asked by GIANSH GUPTA KHUNDKER · BIRLA BRAINIACS

A student stands 165 meters away from a tall vertical wall and claps their hands loudly. If the speed of sound in air is 330 m/s, how much time elapses between the clap and the student hearing the echo?A) 0.5 secondsB) 1.0 secondC) 1.5 secondsD) 2.0 seconds

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