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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
- The de-Broglie wavelength of an electron having 80 eV of energy is nearly
- When 4 A current flows for 2 min in an electroplating experiment,
- The wavelength of light emitted from second orbit to first orbit in a hydrogen atom is
- A small signal voltage V(t)=V₀ sin ωt is applied across an ideal capacitor C
- A metal rod of length l cuts across a uniform magnetic field B with a velocity v.
Topics: Gravitation (63)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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