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A body revolved around the sun 27 times faster than the earth. What is the ratio of their radii?
Options
(a) 1 / 3
(b) 1 / 9
(c) 1 / 27
(d) 1 / 4
Correct Answer:
1 / 9
Explanation:
Using Kepler’s 3rd law
T^2=R^3
(1/27)^2/3=R1/R2
R1/R2=(1/3)^2=1/9.
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Topics: Gravitation
(63)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Initial angular velocity of a circular disc of mass M is ?￢ﾂﾁ.Then, two small spheres
- Current flows in semi-conductors through
- A body takes 5 minute for cooling from 50⁰C to 40⁰C. Its temperature
- An electron moves on a straight line path XY as shown. The abcd is a coil adjacent
- Electrons used in an electron microscope are accelerated by a voltage of 25 kV
Topics: Gravitation (63)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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