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Which of the diagrams shown in Figure most closely shows the variation in kinetic energy of the earth as it moves once around the sun in its elliptical orbit?

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The answer is the option (d)

On the path where Earth orbits around the sun, the speed of Earth is maximum when its position is closest to the sun, and the speed of Earth is minimum when it is farther away from the sun. Hence, we can conclude that kinetic energy can never be negative or zero. Hence, the graph in option d is correct.

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