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The equation of a wave is given by y=10 ...

The equation of a wave is given by `y=10 sin ((2pi)/45 t+alpha)`. If the displacement is 5 cm at `t=0`, then the total phase at `t=7.5` s is

A

`pi/3`

B

`pi/2`

C

`pi/6`

D

`pi`

Text Solution

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The correct Answer is:
B
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