Gravitation - Result Question 7

7. The distance of two planets from the sun are 1013 and 1012 metres respectively. The ratio of time periods of these two planets is

[1988]

(a) 110

(b) 100

(c) 1010

(d) 10

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Answer:

Correct Answer: 7. (c)

Solution:

  1. (c) T2R3 (Kepler’s law)

T12T22=(10131012)3T1T2=1010



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