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The amplitude and the time period in a S...

The amplitude and the time period in a S.H.M. is 0.5 cm and 0.4 sec respectively. If the initial phase is `pi//2` radian, then the equation of S.H.M. will be

A

`y=0.5" "sin" "5pit`

B

`y=5" "sin" "5pit`

C

`y=0.5" "sin" "2.5pit`

D

`y=0.5" "cos" "5pit`

Text Solution

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The correct Answer is:
D
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