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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
- A Zenor diode has a contact potential of 1 V in the absence of biasing. It undergoes
- At what temperature will the rms speed of air molecules be double that of NTP?
- Hydrogen atom in ground state is excited by a monochrmatic radiation of λ=975 Å
- A Carnot engine, having an efficiency of η=1/10 as heat engine, is used
- The potential energy of a system increases if work is done
Topics: Gravitation (63)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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