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The acceleration due to gravity near the surface of a planet of radius R and density d is proportional to
Options
(a) d/R²
(b) dR²
(c) dR
(d) d/R
Correct Answer:
dR
Explanation:
g=GM/R²
(M=Mass of the earth); (R=Distance of body from centre of earth)
g=G Volume x density / R²
Volume of the sphere=4/3 πR³
Therefore, g=G.4/3 πR³.d / R²
g=G 4/3 πRd
g=4πG/3.dR
g is proportional to dR
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Topics: Gravitation
(63)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Two blocks of masses m₁=4 kg and m₂= 2kg are connected to the ends of a string
- If a proton, a deuteron and an alpha particle, on being accelerated by the same
- A hollow sphere of charge does not produce an electric field at any
- A 36 Ω galvanometer is shunted by resistance of 4 Ω. The percentage of the total current
- Two bullets are fired simultaneously, horizontally and with different speeds
Topics: Gravitation (63)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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