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Assertion : In x = A cos omega t, the d...

Assertion : In ` x = A cos omega t`, the dot product of acceleration and velocity is positive for time interval `0 lt t lt (pi)/(2omega)`. Reason : Angle between them is `0^(@)` .

A

If both Assertion and Reason are true and the Reason is correct explanation of the Assertion.

B

If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.

C

If Assertion is true, but the Reason is false.

D

If Assertion is false but the Reason is true.

Text Solution

Verified by Experts

The correct Answer is:
A
`(pi)/(2omega) = (pi)/(2(2pi//T)) = (T)/(4)`.
In the given time particle moves from `x = A` to `x = 0`.
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