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प्रश्न
How do animals sense impending danger of hurricane?
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उत्तर
Hurricane produces a shock wave which has a speed greater than the speed of sound. It travels with a supersonic sound that can be easily sensed by animals using the Doppler effect. The multiple reflections of sound can be easily sensed by animals.
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संबंधित प्रश्न
The change in frequency due to Doppler effect does not depend on
Answer briefly.
State the expression for apparent frequency when source of sound and listener are
- moving towards each other
- moving away from each other
Solve the following problem.
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