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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
- Given a sample of radium-226 having half-life of 4 days. Find the probability,
- In a franhofer diffraction experiment at a single slit using a light of wavelength
- If the lattice parameter for a crystalline structure is 3.6 Å, then the atomic radius
- In a circuit, the current lags behind the voltage by a phase difference of π/2.
- A block is moving up an inclined plane of inclination 60° with velocity of 20 ms⁻¹
Topics: Gravitation (63)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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