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प्रश्न
The town hall building is situated close to Boojho’s house. There is a clock on the top of the town hall building which rings the bell every hour. Boojho has noticed that the sound of the clock appears to be much clearer at night. Explain.
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उत्तर
We know that speed, pitch and loudness are all initiated with a vibration. During the day, there are a number of vibrations around us. So, the sound coming from the clock gets disturbed and amplitude of vibrations becomes small.
But during the night, there are not such multiple vibrations in the environment. So, sound is more clear. Further, the dew factor at night increases the speed of sound as moisture level increases.
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