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The time period of a simple pendulum in a lift descending with constant acceleration g is
Options
(a) T=2π√l/g
(b) T=2π√l/2g
(c) zero
(d) Infinite
Correct Answer:
Infinite
Explanation:
When the lift falls freely under gravity, effective ‘g’ for pendulum in the lift = zero.
T = 2π √(l/g) = 2π√(l/o) = Infinite.
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Topics: Oscillations
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Subject: Physics
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Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A nucleus ᵐₙ X emits one α- particle and two β- particles. The resulting nucleus is
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- The threshold frequency for a photosensitive metal is 3.3 x 10¹⁴ Hz.
- A parallel plate capacitor with air between the plates has a capacitance of 9 pF.
- A common emitter amplifier gives an output of 3 V for an input of 0.01 V.
Topics: Oscillations (58)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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