The displacement of a damped harmonic oscillator is given byx(t) = e-0 – McqOptions

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1.	The displacement of a damped harmonic oscillator is given byx(t) = e-0.1t·cos (10πt + ϕ). 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
Answer» C. 13 s

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