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प्रश्न
A cricket ball is seen to hit the bat first and the sound of hitting is heard a little later. Why?
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उत्तर
At first, we see the ball hitting the bat and then we hear the sound of hitting because light (3 × 108 m/s) travels faster than sound (340 m/s) in air.
Therefore, we hear the sound of hitting a little later than we see it.
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संबंधित प्रश्न
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Numerical problems:
Two persons are at opposite ends of a steel rod. One strikes the end of the rod with a stone. Find the ratio of time taken by the sound wave in the air and in steel to reach the second person. (Sound of speed in steel = 5960 ms-1, Sound of speed in air = 344 ms-1).
