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The radius of a planet is twice the radius of earth. Both have almost equal average mass densities. If Vp and Ve are escape velocities of the planet and the earth, respectively, then,
Options
(a) Ve = 1.5 Vp
(b) Vp = 1.5 Ve
(c) Vp = 2 Ve
(d) Ve = 3 Vp
Correct Answer:
Vp = 2 Ve
Explanation:
Escape velocity, vₑ = R√(8/3 πGP)
⇒ vₑ ∞ R ⇒ Vₚ / Vₑ = Rₚ / Rₑ = 2
Vₚ = 2 vₑ
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Topics: Gravitation
(63)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- When sound is produced in an aeroplane with a velocity of 200 m/s horizontally,
- Light is emitted when
- A spring has time period T. It is cut into n equal parts. The time period of each part
- A parallel plate condenser has a uniform electric field E(V/m) in the space between
- A solid sphere of mass M, radius R and having moment of inertia about an axis passing
Topics: Gravitation (63)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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