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Kepler's second law states that the line joining a planet and the Sun sweeps out:
AEqual distances in equal intervals of time
BEqual angles in equal intervals of time
CEqual areas in equal intervals of time
DEqual volumes in equal intervals of time
Answer & Solution
Correct answer: C. Equal areas in equal intervals of time
1. Kepler's second law concerns the rate at which the planet-Sun line sweeps area.
2. It states the line joining the planet and the Sun sweeps equal areas in equal intervals of time.
3. So areas like ASB and CSD swept in equal times are equal, even though the path lengths differ.
4. Equal distances or equal angles are ruled out; only the swept area is equal.
_Source: Balbharati (Maharashtra Board) Class 10 Science & Technology, Ch 1 "Gravitation", p.12_
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