A man standing 48 m away from a wall fires a gun. Calculate the time after which an echo is heard (The speed of sound in air is 320 ms-¹) - VgyanHub

Question:

A man standing 48 m away from a wall fires a gun. Calculate the time after which an echo is heard (The speed of sound in air is 320 ms-¹)

Options :

(a) 0.38 s
(b) 0.30 s
(c) 0.50 s
(d) 0.60 s

Answer :

(b) 0.30 s

Answer Steps :

step 1

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