The town hall building is situated close to Boojho’s house. There is a clock on the top of the townhall building which rings the bell every hour. Boojho has noticed that the sound of the clock appears to be much clearer at night. Explain.

We know that speed, pitch, and loudness all start with a vibration. During the day, there are many vibrations around us. So, the sound coming from the watch gets disturbed and the amplitude of the vibration gets smaller.
But during the night there are not so many vibrations in the atmosphere. So, the sound is more clear. In addition, - "the dew factor at night increases the speed of sound as humidity levels increase.

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