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The displacement of a damped harmonic os...

The displacement of a damped harmonic oscillator is given by
`x(t)-r^(-0.1t) cos(10pit+varphi)`.Here t is in seconds.
The time taken for its amplitude of vibration to drop to half of its initial value is close to :

A

4 s

B

7 s

C

13 s

D

27 s

Text Solution

Verified by Experts

The correct Answer is:
C
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