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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: - Two nuclei have their mass numbers into the ratio of 1:3
- The pair of quantities having same dimensions is
- The de-Broglie wavelength of an electron moving with a velocity 1.5×10⁸ ms⁻¹ is equal
- Time period of oscillation of a magnet is 2 sec. When it is remagnetised
- Reactance of a capacitor of capacitance C µF for A.C freqency (400 / π) Hz is 25 ohm
Topics: Gravitation
(63)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Two nuclei have their mass numbers into the ratio of 1:3
- The pair of quantities having same dimensions is
- The de-Broglie wavelength of an electron moving with a velocity 1.5×10⁸ ms⁻¹ is equal
- Time period of oscillation of a magnet is 2 sec. When it is remagnetised
- Reactance of a capacitor of capacitance C µF for A.C freqency (400 / π) Hz is 25 ohm
Topics: Gravitation (63)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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