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Take four jars with different amount of water. Hit the rim of the jars with the pencil. In which one of the following case, the intensity of sound will be maximum?

(a.) The jar filled completely

(b.) Jar half filled

(c.) Jar filled less than half

(d.) Jar filled more than half

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The correct option of this question is (C).

Explanation : More the air column more is the vibration, hence more will be the sound.

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