The sound of an explosion on the surface of a lake is heard by a boatman $100 m$ away and a driver $100 m$ below the point of explosion. Of the two persons mentioned (boatman or driver) who would hear the sound first? And why?

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Solution

The speed of the sound depends upon the medium and the properties through which the sound wave is traveling.
The speed of the sound is in the following order: solid > liquid > gas.
Hence, the driver will hear the sound first because the velocity of sound in water is greater than that in air.

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(iii) If sound takes time t to reach the boatman, how much time approximately does it take to reach the diver?

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Q. The sound of an explosion on the surface of a lake is heard by a boat man

100 m

away and by a diver

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below the point of explosion. If sound takes time

t

to reach the boat man, how much time approximately does it take to reach the diver?

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The sound of an explosion on the surface of a lake is heard by a boatman 100m away and a driver 100m below the point of explosion. Of the two persons mentioned (boatman or driver) who would hear the sound first? And why?

The speed of the sound depends upon the medium and the properties through which the sound wave is traveling.The speed of the sound is in the following order: solid > liquid > gas. Hence, the driver will hear the sound first because the velocity of sound in water is greater than that in air.

The sound of an explosion on the surface of a lake is heard by a boatman $100 m$ away and a driver $100 m$ below the point of explosion. Of the two persons mentioned (boatman or driver) who would hear the sound first? And why?

The speed of the sound depends upon the medium and the properties through which the sound wave is traveling.
The speed of the sound is in the following order: solid > liquid > gas.
Hence, the driver will hear the sound first because the velocity of sound in water is greater than that in air.