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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
- Einstein’s photoelectric equation is
- In Wheatstone bridge, three resistors P,Q and R are conncected in three arms
- The position vector of a particle R as a function of time is given by
- The phase difference between two points seperated by 0.8 m in a wave of frequency
- If the cold junction of a thermo-couple is kept at 0⁰C and the hot junction is kept
Topics: Gravitation (63)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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