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A simple pendulum doing small oscillations at a place R height above earth surface has time period of T 1 = 4s. T 2 would be it's time period if it is brought to a point which is at a height 2R from earth surface. Choose the correct relation [R = radius of Earth]:

1. T 1 = T 2
2. 2T 1 = 3T 2
3. 3T 1 = 2T 2
4. 2T 1 = T 2

Correct answer: 3T 1 = 2T 2

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