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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
Related Questions: - The threshold frequency for a certain photosensitive metal is ν₀. When it is illuminated
- The electric resistance of a certain wire of iron is R. If its length and radius
- An open pipe resonates with a tuning fork of frequency 500 Hz. It is observed
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Topics: Gravitation
(63)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The threshold frequency for a certain photosensitive metal is ν₀. When it is illuminated
- The electric resistance of a certain wire of iron is R. If its length and radius
- An open pipe resonates with a tuning fork of frequency 500 Hz. It is observed
- Choose the correct statement
- A point source is kept at a distnace 1000m has an illumination I. To change the illumination
Topics: Gravitation (63)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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