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A transverse wave y = 0.05 sin ( 20 pi ...

A transverse wave ` y = 0.05 sin ( 20 pi x - 50 pi t)` meters , is propagating along + ve X - axis on a string light insect starts crawling on the string with velocity of 5 cm /s at t= 0 along the +ve X - axis from point where x = 5 cm . After 5 s the difference in phase of its position is equal to

A

`150 pi `

B

` 250 pi `

C

`-245 pi`

D

`-5pi`

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The correct Answer is:
B
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