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  4. 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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Q. 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?

Work, Energy and Power

Solution:

As the earth moves once around the sun in its elliptical orbit, its kinetic energy is maximum when it is closest to the sun and minimum when it is farthest from the sun. As kinetic energy is never zero during its motion, hence option is correct.