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Assertion : In x = A cos omega t, x is t...

Assertion : In `x = A cos omega t`, `x` is the displacement measured from extreme position.
Reason : In the above equation `x = A` at time `t = 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:
D

`x` is measured from the mean position.
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Knowledge Check

  • 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.
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    D
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  • Displacement x at time t is x=t-t^(3) . If v is the velocity and a the acceleration at time t, then :v =

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  • The displacement of a particle varies with time according to the relation y=a sin omega t +b cos omega t .

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    B
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    C
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