Answer :
Boojho has noticed that the sound of the clock appears to be much clearer at night because:
⇒ During the day, there are number of vibrations travel in the surroundings.
⇒ So the sound coming from the alarm gets distracted and amplitude of vibrations becomes small.
⇒ As a result, the loudness of sound become slow.
⇒ During the night, the noise level is quite low. There are no multiple vibrations travel in the surroundings.
⇒ Thus, the sound becomes clear and loud.
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