JEE Main Physics question

PhysicsMotion in a Straight LineJEE Main

A ball falls from height . After 1 second, another ball falls freely from a point 20 below the point from where the first ball falls. Both of them reach the ground at the same time. What is the value of

Answer: (C)

Solution

Let total fall time of ball 1 : . Ball 2 falls s to cover :

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Question ID VK-152669