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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 total energy of a particle executing SHM is 80 J
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Topics: Gravitation
(63)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The total energy of a particle executing SHM is 80 J
- A magnetic force acting on a charged particle of charge -2µC in a magnetic field of 2T
- A long wire carrying a steady current is bent into a circular loop of one turn.
- Heat is flowing through a rod of length 50 cm and area of cross-section 5 cm².
- The primary and secondary coil of the transformer have 50 and 1500 turns respectively
Topics: Gravitation (63)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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