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JEE Main 2022 Physics question

PhysicsOscillationsJEE Main 2022

The length of a seconds pendulum at a height h = 2R from earth surface will be (Given R = Radius of earth and acceleration due to gravity at the surface of earth, )

Answer: (4)

Solution

At height 2R, = GM/(R + = g/9. The seconds pendulum has T = 2 s:

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Question ID VK-024666