Which of the following is the evidence to show that there must be a force acting on earth and directed towards Sun?

Apparent motion of sun around the earth

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Phenomenon of day and night

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Revolution of earth around the Sun

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Deviation of the falling body towards earth

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Solution

The correct option is D Revolution of earth around the Sun
Earth revolves around the sun. This fact forces us to think of a force that provides necessary centripetal acceleration to drive the revolutionary motion. This necessary force is provided by the force of attraction (gravitational) between earth and sun.

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