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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
Related Questions: - The radius of germanium nuclide is measured to be twice the radius of ₄⁹Be.
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Topics: Gravitation
(63)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The radius of germanium nuclide is measured to be twice the radius of ₄⁹Be.
- A thermocouple of negligible resistance produces an e.m.f. of 40 µV/⁰C in the linear range
- The displacement ‘x’ (in meter) of a particle of mass ‘m’ (in kg) moving in one
- A wire of resistance 4 ohm is stretched to twice its original length.
- When a radioactive substance emits an ∝ particle, its position in the periodic table
Topics: Gravitation (63)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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