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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
- If temperature of gas increases from 27°C to 927°C, the kinetic energy will be
- The maximum particle velocity in a wave motion is half the wave velocity.
- The cadmium rods are used in nuclear reactor to
- If the length of a stretched string is shortened by 4% and the tension is increased
- A filament bulb (500W,100V) is to be used in a 230V main supply. When a resistance
Topics: Gravitation (63)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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