| ⇦ | 
| ⇨ |
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 primary and secondary coil of the transformer have 50 and 1500 turns respectively
- A body travels 200 cm in the first two seconds and 220 cm in the next 4 secs
- Two conducting spheres of radii 5 cm and 10 cm are given a charge of 15 μC each.
- Two resistances 3Ω and 6Ω are connected in parallel
- If h is Planck’s constant, the momentum of a photon of wavelength 0.01 Å is
Topics: Gravitation
(63)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The primary and secondary coil of the transformer have 50 and 1500 turns respectively
- A body travels 200 cm in the first two seconds and 220 cm in the next 4 secs
- Two conducting spheres of radii 5 cm and 10 cm are given a charge of 15 μC each.
- Two resistances 3Ω and 6Ω are connected in parallel
- If h is Planck’s constant, the momentum of a photon of wavelength 0.01 Å is
Topics: Gravitation (63)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
18000+ students are using NEETLab to improve their score. What about you?
Solve Previous Year MCQs, Mock Tests, Topicwise Practice Tests, Identify Weak Topics, Formula Flash cards and much more is available in NEETLab Android App to improve your NEET score.
Share this page with your friends
Leave a Reply