Physicsmedium · Past Paper
If you are standing 100 meters away from a mountain and you shout, how much time will it take for the echo to reach you? (Speed of sound = 340 m/s)
A0.29 s
B0.59 s
C1.7 s
D3.4 s
✓ Correct Answer: B — 0.59 s
Total distance = 2 * 100 = 200 m. Time = Distance / Speed = 200 / 340 ≈ 0.588 s.
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