| ⇦ | 
| ⇨ |
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: - For non-conductors, the energy gap is
- Two capacitors of capacitances 2 μF and 3 μF are joined in series.
- Two resistors of resistances 2Ω and 6Ω are connected in parallel.
- A train moving at a speed of 220 ms⁻¹ towards a stationary object
- A tangent galvanometer has a coil of 50 turns and a radius of 20 cm. The horizontal
Topics: Gravitation
(63)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- For non-conductors, the energy gap is
- Two capacitors of capacitances 2 μF and 3 μF are joined in series.
- Two resistors of resistances 2Ω and 6Ω are connected in parallel.
- A train moving at a speed of 220 ms⁻¹ towards a stationary object
- A tangent galvanometer has a coil of 50 turns and a radius of 20 cm. The horizontal
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