Home
Class 12
PHYSICS
A planet is revolving around the sun in ...

A planet is revolving around the sun in an elliptical orbit. Which out of the following remains constant.

A

Linear speed

B

angular momentum

C

kinetic energy

D

potential energy

Text Solution

Verified by Experts

The correct Answer is:
All quantities vary over an orbit except angular momentum and total energy
Net torque on thhe comet is zero then the angular momentum is conserved
Promotional Banner

Topper's Solved these Questions

  • GRAVITATION

    ALLEN |Exercise Exercise 4 B (Brain Storming Subjective Exercise)|20 Videos

  • GRAVITATION

    ALLEN |Exercise Exercise 5 A (Previous Year Questions)|26 Videos

  • GRAVITATION

    ALLEN |Exercise Exercise 3 (Miscellaneous Type Questions)|20 Videos

  • GEOMETRICAL OPTICS

    ALLEN |Exercise subjective|14 Videos

  • KINEMATICS-2D

    ALLEN |Exercise Exercise (O-2)|47 Videos

Similar Questions

Explore conceptually related problems

A planet is revolving around the sun as shown in elliptical path. The correct option is

Two ordinary satellites are revolving round the earth in same elliptical orbit, then which of the following quantities is conserved :-

A planet is revolving around the Sun in an elliptical orbit. Its closest distance from the sun is r_(min) . The farthest distance from the sun is r_(max) if the orbital angular velocity of the planet when it is nearest to the Sun omega then the orbital angular velocity at the point when it i at the farthest distanec from the sun is

A planet revolves around the sun in an elliptical orbit. If v_(p) and v_(a) are the velocities of the planet at the perigee and apogee respectively, then the eccentricity of the elliptical orbit is given by :

For different satellite revolving around a planet in different circular orbit, which of the following shows the relation between the angular momentum L and the orbital radius r?

In adjoining figure earth goes around the sun in eliptical orbit on which point the orbital speed is maximum :

Comets move around the sun in highly elliptical orbits . The gravitational force on the comet due to the sun is not normal to the comet's velocity in general. yet the work done by the gravitational force over energy complete orbit of the comet is zero . Why ?

Length of a year on a planet is the duration in which it completes one revolution around the sun. Assume path of the planet known as orbit to be circular with sun at the centre. The length T of a year of a planet orbiting around the sun in circular orbit depends on universal gravitational constant G, mass m_(s) of the sun and radius r of the orbit. if TpropG^(a)m_(s)^(b)r^(c) find value of a+b+2c.

A plenet moving along an elliptical orbit is closest to the sun at a distance r_(1) and farthest away at a distance of r_(2) . If v_(1) and v_(2) are the linear velocities at these points respectively, then the ratio (v_(1))/(v_(2)) is