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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: - A pan is suspended from a steel wire. Weights are slowly put on the pan
- A ball moving with velocity 2 m/s collides head on with another stationary ball
- Which of the following parameters does not characterize the thermodynamic state
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Topics: Gravitation
(63)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A pan is suspended from a steel wire. Weights are slowly put on the pan
- A ball moving with velocity 2 m/s collides head on with another stationary ball
- Which of the following parameters does not characterize the thermodynamic state
- If the length of a closed organ pipe is 1.5 m and velocity of sound is 330 m/s,
- A very small circular loop of radius a is initially (at t=0) coplanar and concentric
Topics: Gravitation (63)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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