The radius of a planet is twice the radius of earth. Both have almost

⇦

⇨

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:

1. A capacitor is charged to 200 volt. It has a charge of 0.1 coulomb.
2. A glass slab consists of thin uniform layers of progressively decreasing refractive
3. A body, which emits radiations of all possible wavelengths, is known as
4. A hollow sphere of radius 0.1m has a charge of 5×10⁻⁸C. The potential
5. A moving coil galvanometer of resistance 100 Ω is converted to ammeter by a resistance

Topics: Gravitation (63)
Subject: Physics (2479)

---

Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score

18000+ students are using NEETLab to improve their score. What about you?

Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.

---

Share this page with your friends