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During motion of a planet from perihelion to aphelion, the workdone by gravitational force of sun on it is

A zero
B negative
C positive
D may be positive or negative

User Sourcx
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Answer:

B - negative

Step-by-step explanation:

From perihelion to aphelion, the potential energy of the planet has increased, therefore the work done by the gravity is negative.

User Yokesh Varadhan
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