In this question, a statement of assertion 
is followed by a statement of reason (R). Mark the correct choice as:
Assertion: Smaller the orbit of the planet around the sun, shorter is the time it takes to complete one revolution.
Reason: According to Kepler's third law of planetary motion, square of time period is proportional to cube of mean distance from sun.
Text Solution
Verified by ExpertsA
According to Kepler's third law of motion, the square of the time period of a planet about the
sun is proportional to the cube of the semi major axis of the ellipse or mean distance of the planet from the sun. i.e. 
, when 
is smaller, shorter is the time period.
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