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The radius of orbit of a planet is two times that of the earth. The time period of planet is
Options
(a) 4.2 year
(b) 2.8 year
(c) 5.6 year
(d) 8.4 year
Correct Answer:
2.8 year
Explanation:
No explanation available. Be the first to write the explanation for this question by commenting below.
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Topics: Gravitation
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Subject: Physics
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Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- which of the following can not be emitted by radioactive substances during their decay?
- If wavelength of a wave is λ=6000 Å, then wave number will be
- A proton beam enters a magnetic field of 10⁻⁴ Wb/m² normally. If the specific charge
- An object moving with a speed of 6.25 m/s, is deaccelerated at a rate given by
- The ratio of magnetic dipole moment of an electron of charge e and mass m
Topics: Gravitation (63)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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By keplers third law (T1^2/T2^2)=(R1^3/R2^3)
so,
x^2/1^2=(2r)^3/r^3
x^2=8
x=2.8