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The ratio of radii of planets A and B is K₁ and ratio of accelerations due to gravity on them is K₂. The ratio of escape velocities from them will be
Options
(a) K₁K₂
(b) √K₁K₂
(c) √K₁/K₂
(d) √K₂/K₁
Correct Answer:
√K₁K₂
Explanation:
Escape velocity Ve=(√2Rg)
The radii of two planets R₁/R₂=K₁
The acceleration due to gravity of two planets g₁/g₂=K₂
The escape velocity of two planets v₁/v₂=?
v₁/v₂=(√2R₁g₁/2R₂g₂)
=(√R₁/R₂.g₁/g₂)
=(√K₁K₂ )
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Topics: Gravitation
(63)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- When a biconvex lens of glass having refractive index 1.47 is dipped in a liquid
- A circular disc of radius R is removed from a bigger circular disc of radius 2R
- A block of mass m is moving on a wedge with the acceleration aᵒ
- A train of mass 2x 10⁵ kg has a constant speed of 20 m/s up a hill inclined
- A particle is moving in a circle with uniform speed v. In moving from a point to another
Topics: Gravitation (63)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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