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The oscillation of a body on a smooth ho...

The oscillation of a body on a smooth horizontal surface is represented by the equation,
`X = A cos (omega t)`
where, X = displacement at time t
`omega =` frequency of oscillation
Which one of the following graphs shows correctly the variation a with t?
Here, a = acceleration at time t
T = time period

A

B

C

D

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The correct Answer is:
C
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