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A travelling wave in a string is repre...

A travelling wave in a string is represented by `y=3 sin ((pi)/(2)t - (pi)/(4) x) `. The phase difference between two particles separated by a distance 4 cm is ( Take x and y in cm and t in seconds )

A

`(pi)/(2) ` rad

B

`(pi)/(4)` rad

C

`pi` rad

D

0

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The correct Answer is:
C
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