What is time period of a simple pendulum...

What is time period of a simple pendulum in a freely falling lift ?

zero

infinite

none of the given

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The correct Answer is:

The effective gravitation of body is g - a for a body of acceleration a in the lift moving in downward direction
Period of pendulum `T= 2pi sqrt((l)/(g))`
In lift moving downward with acceleration a is
Acceleration a=g for lift falling freely
`:. , T = 2pi sqrt((l )/(g-g)) = prop` (infinite )

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