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The radii of circular orbits of two satellites A and B of the earth, are 4R and R respectively. If the speed of satellite A is 3 V, then the speed of satellite B will be
Options
(a) 3 V / 4
(b) 6 V
(c) 12 V
(d) 3 V / 2
Correct Answer:
6 V
Explanation:
Orbital velocity of a satellite in a circular orbit of radius a is given by
v = √(GM / a) ⇒ v α √(1/a) ⇒ v₂ / v₁ = √(a₁ / a₂)
v₂ = v₁ √(4R / R) = 2 v₁ = 6 V
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Topics: Gravitation
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Subject: Physics
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Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The e.m.f. of a battery is 2 V and its internal resistance is 0.5 Ω. The maximum
- The molar specific heats of an ideal gas at constant pressure and volume are denoted
- A p-n-p transistor is used in common emitter mode in an amplifier circuit.
- A luminous object is seperated from a screen by distance d. A convex lens
- Charge Q is divided into two parts which are then kept some distance apart. The force
Topics: Gravitation (63)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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