A man measures the period of a simple pendulum inside a stationary ...

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A man measures the period of a simple pendulum inside a stationary lift and finds it to be \( T \mathrm{~s} \). If the lift accelerates
\( \mathrm{P} \) upwards with an acceleration \( g / 4 \), then the period of the pendulum will be
[NCERT 1990; BHU 2001;
W
DPMT 2000, 03; Kerala PET 2008]
(a) \( T \)
(b) \( \frac{T}{4} \)
(c) \( \frac{2 T}{\sqrt{5}} \)
(d) \( 2 T \sqrt{5} \)
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