A closed organ pipe and an open organ pipe of same length produce `4` beats when they are set into vibrations simultaneously. If the length of each of them were twice their initial lengths, the number of beats produced will beA. 2B. 4C. 1D. 8

A closed organ pipe and an open organ pipe of same length produce `4`

1.	A closed organ pipe and an open organ pipe of same length produce `4` beats when they are set into vibrations simultaneously. If the length of each of them were twice their initial lengths, the number of beats produced will beA. 2B. 4C. 1D. 8
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A closed organ pipe and an open organ pipe of same length produce `4` beats when they are set into vibrations simultaneously. If the length of each of them were twice their initial lengths, the number of beats produced will beA. 2B. 4C. 1D. 8

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