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MHT CET Physics question

PhysicsOscillationsMHT CET

Simple pendulums of length 5 m and 20 m respectively are given small linear displacement in one direction at the same time. They will again be in phase when the pendulum of shorter length has completed the number of oscillations are

Answer: (C)

Solution

, so when the shorter pendulum completes 2 oscillations the longer one completes exactly 1 and they are in phase

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Question ID VK-067883