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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 physical quantities not having same dimensions are
- The resistance of a carbon resistor of colour code Red-Red Green Silver is(in kΩ)
- A particle moving along X-axis has acceleration f,at time t given by f=fₒ(1- t/T)
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Topics: Gravitation
(63)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The physical quantities not having same dimensions are
- The resistance of a carbon resistor of colour code Red-Red Green Silver is(in kΩ)
- A particle moving along X-axis has acceleration f,at time t given by f=fₒ(1- t/T)
- A scooter is going round a circular road of radius 100 m at a speed of 10m/s
- Three objects A,B and C are kept in a straight line on a frictionless horizontal surface
Topics: Gravitation (63)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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