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A planet moving along an elliptical orbit is closest to the sun at a distance of r₁. If v₁ and v₂ are the linear velocities at these points respectively then the ratio v₁ / v₂ is
Options
(a) ( r₁ / r₂)²
(b) r₂ / r₁
(c) (r₂ / r₁)²
(d) r₁ / r₂
Correct Answer:
r₂ / r₁
Explanation:
Angular momentum is conserved
L₁ = L₂ ⇒ mr₁v₁ = mr₂v₂ ⇒ r₁v₁ = r₂v₂
⇒ v₁ / v₂ = r₂ / r₁
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Topics: Gravitation
(63)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- If longitudinal strain for a wire is 0.03 and its poisson’s ratio is 0.5
- On observing light from three different stars P, Q and R, it was found that intensity
- The temperature coefficient of a resistance wire is 0.00125 per degree.
- In an LCR circuit, capacitance is changed from C to 2C. For the resonant frequency
- In one dimensionsal motion,instantaneous speed v statisfies 0⦤v⦤vₒ
Topics: Gravitation (63)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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