A tuning fork sounds louder when its stem is pressed against a table top than when held in air because
a
a larger mass of air is set vibrating by the table top
b
the whole table vibrates in resonance
c
the whole table has acquired a larger frequency
d
the fork and table have the same frequency
e
the amplitude of the vibrating fork is increased.
Explanation
Correct Option
cNo explanation available
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umiyang
6 years ago
The vibrating tuning fork forces the table top to vibrate. The table top has a much larger area and is therefore in contact with a larger volume of air undergoing vibration. Hence, sound heard is louder.
