ICSE Class 10 Physics 2018 Solved Paper
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A person is standing at the sea shore. An observer on the ship which is anchored in between a vertical cliff and the person on the shore fires a gun. The person on the shore hears two sounds, 2 seconds and 3 seconds after seeing the smoke of the fired gun. If the speed of sound in the air is 320 ms − 1
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Question : 55
Total: 78
the distance between the observer on the ship and the person on the shore.
Solution:
The time taken by sound to travel from observer on the ship to the person on the shore = 2
Speed of sound in air= 320 m ∕ s
∵ = ×
∵
= 320 × 2
= 640 m
Speed of sound in air
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