A) Planet X has longer revolution period than planet Y
B) Planet Y has longer revolution period than planet X
C) Planet X has longer rotation period than planet Y
D) Planet Y has longer rotation period than planet X
Correct Answer: B
Solution :
Farther a planet is from the Sun, larger is its orbit because circles of larger radii have larger periphery. So, it will take more time to complete a revolution i.e., to cover the entire length of its orbit. Planet X is closer to Sun, thus, its orbit will be smaller. So, it will take lesser time to complete a revolution. Orbital size has no impact on rotation.
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