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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 motion of a particle along a straight line is described by equation
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Topics: Gravitation
(63)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The motion of a particle along a straight line is described by equation
- Sodium and copper have work function 2.3 eV and 4.5 eV respectively
- Two tangent galvanometers A and B have coils of radii 8 cm and 16 cm respectively
- The range of voltmeter is 10V and its internal resistance is 50Ω.
- To convert a 800 mV range millivoltmeter of resistance 40Ω into an ammeter of 100 mA
Topics: Gravitation (63)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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