Physics
Grade-9
Easy
Question
Two simple pendulums of lengths 5 m and 20 m respectively are given small linear displacement in one direction at the same time. They will again be in the phase when the pendulum of shorter length has completed .... oscillations.
- 3
- 5
- 2
- 1
Hint:
The correct answer is: 2
It is given that,
Length of first pendulum, l1=5m
Length of second pendulum,l2=20m
Time period is given by: 
So T1=

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