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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
(63)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- If a mass of 20g having charge 3.0 mC moving with velocity 20ms⁻¹ enters a region
- Under constant pressure, graph between P and 1/V is a
- A tuning fork gives 4 beats with 50 cm length of a sonometer
- If the unit of force and length are doubled, then unit of energy will be
- A round uniform body of radius R, mass M and moment of inertia I rolls down
Topics: Gravitation (63)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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