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The graph shown the variation with times...

The graph shown the variation with times `t` of the velocity `v` of an object . Which one of the following graphs best represents the variation of acceleration `a` of the object with time `t`?

A

B

C

D

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The correct Answer is:
D
Ans. `(4)`
Acceleration `a=(dv)/(dt)` and slope of a parabolic curve is a straight line.
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