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What is the constant of proportionality in Kepler’s law of periods known as?

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in Physics – Class 11 by (74.2k points)
What is the constant of proportionality in Kepler’s law of periods known as?

(a) Universal gravitational constant

(b) Escape velocity

(c) There is no constant of proportionality

(d) Cannot be determined

I got this question in an interview.

Origin of the question is Gravitation in division Gravitation of Physics – Class 11

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Best answer
The correct option is (c) There is no constant of proportionality

Best explanation: There is no particular constant of proportionality for Kepler’s law of periods. The law of periods only relates the proportionality of the square of the time period of revolution of a planet to the cube of the semi-major axis of the orbit of the planet.

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