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A car is approaching a hill at a high sp...

A car is approaching a hill at a high speed . At that time, it the horm of the car is blown, that driver hears the echo sharper than the original sound . Explain the reason.

Text Solution

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The original sound after being reflected from the hill approaches the car and the driver listens to the eacho . So , in this case, the listener is moving towerds the source of the each . So due to Doppler effect, the echo is of a higher apparent frequency . Thus, it appears to be sharper than the original sound to the driver .
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