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A planet of mass m is moving around the ...

A planet of mass m is moving around the sun in an elliptical orbit of semi-major axis a :

A

The total mechanical energy of the planet is varying periodically with time

B

The total energ of the planet is constant and equals `- (GmM_(s))/(2a), N_(s)` is mass of sun

C

Total mechanical energy of the planet is constant and equals `- (GmM_(s))/(a), M_(2)` is mass of sun

D

Date is insufficient of arrice at a conclusion

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The correct Answer is:
B
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PHYSICS GALAXY - ASHISH ARORA-GRAVITATION-Concetual MCQ
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