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MHT CET 2024 (9 May, Shift 1) · Kepler's Laws & Planetary Motion

Kepler's Laws & Planetary Motion question from MHT CET 2024 (9 May, Shift 1)

Q5MHT CET 2024 · 9 MAY · SHIFT 1Easy

Kepler's Laws & Planetary Motion

The period of a planet around the sun is 8 times that of earth. The ratio of radius of planet's orbit to the radius of the earth's orbit is

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Answer: (a)

Kepler's third law: $r \propto T^{2/3}$ .
$\dfrac{r_p}{r_e} = 8^{2/3} = 4$
So the answer is (a) 4.

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