# According to One of the Kepler'S Laws of Planetary Motion : - Science

MCQ

According to one of the Kepler's laws of planetary motion :

#### Options

• r2 ∝ T3

• r ∝ T2

• r3 ∝ T2

• r^3 ∝ 1/T^2

#### Solution

r3 ∝ T2
According to Kepler’s third law of planetary motion, the cube of mean distance of a planet from the sun is directly proportional to the square of time it takes to move around the sun.

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#### APPEARS IN

Lakhmir Singh Science Class 9 Physics
Chapter 3 Gravitation
MCQ | Q 70 | Page 103