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Class 9-10, JEE & NEET
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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, loudness all are initiated with a vibration. During the day, there is 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.