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In an organ pipe whose one end is at x =...

In an organ pipe whose one end is at x =0, the pressureis expressed by `P = P_(0) "cos" (3 pi x)/(2) sin 300 pi t` where x is in meter and t in sec. The organ pipe can be :-

A

Closed at one end, open at another with length 0.5 m =

B

Open at both ends, length = 1 m

C

Closed at both ends, length 2 m

D

Closed at end, open at another with length `(2)/(3)m`

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The correct Answer is:
C
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