Question

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Question => Sound of an explosion on the surface of a lake is hered by a boat man hundred metre away and by a diver hundred metres below the point of explosion.

So , if sound take time T to reach the boat man how much approximate time does it take to reach the driver​

Answer 1

Answer:

Here, the boat man is on the surface of the lake, that is, air and the diver is inside the lake of water. The diver hears the explosion first as the sound travels four times faster in water than in air. Hence, the time taken for the sound to reach the diver is t×41=0.

Explanation:

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