Home
Class 11
PHYSICS
Satellites orbiting the earth have finit...

Satellites orbiting the earth have finite life and sometimes debris of satellites fall to the earth. This is because,

A

the solar cells and batteries in satellites run out

B

the law of gravitation predict a trajectory spiralling inwards

C

of viscous force causing the speed of satellite and hence hight to gradually decrease

D

of collisions with other satellites

Text Solution

Verified by Experts

The correct Answer is:
C
As the total energy of the earth satellite bounded system is negative `((-GM).(2a))`. Where, a is radius of the satellite and M is mass of the arth.
Due to the viscous force acting on satellite, energy decreases continuously and radius of the orbit or height decreases gradually
Promotional Banner

Topper's Solved these Questions

  • GRAVITATION

    NCERT EXEMPLAR ENGLISH|Exercise Very short Answer type question|11 Videos

  • GRAVITATION

    NCERT EXEMPLAR ENGLISH|Exercise Short Answer type question|6 Videos

  • KINETIC THEORY

    NCERT EXEMPLAR ENGLISH|Exercise Multiple Choice Questions (MCQs)|31 Videos

Similar Questions

Explore conceptually related problems

A satellite is orbiting the earth, if its distance from the earth is increased, its

A satellite is orbiting the earth in a circular orbit of radius r . Its

A satellite orbits the earth near its surface. By what amount does the satellite's clock fall behind the earth's clock in one revolution ? Assume that nonrelativistic analysis can be made to compute the speed of the satellite and only the time dialtion is to be taken into account for calculation of clock speeds.

A geostationary satellite is orbiting the earth at a height of 6R above the surface of earth where R is the radius of the earth .The time period of another satellite at a distance of 3.5R from the Centre of the earth is ….. hours.

A geostationary satellite is orbiting the earth at a height of 5R above the surface of the earth, R being the radius of the earth. The time period of another satellite in hours at a height of 2R form the surface of the earth is

A geostationary satellite is orbiting the earth at a height of 5R above the surface of the earth, 2R being the radius of the earth. The time period of another satellite in hours at a height of 2R form the surface of the earth is

A geostationary satellite is orbiting the earth at a height of 6R above the surface of the earth, where R is the radius of the earth. The time period of another satellite at a height of 2.5 R from the surface of the earth is …… hours.

A geostationary satellite is orbiting the earth at a height of 6R above the surface of the earth, where R is the radius of the earth. The time period of another satellite at a height of 2.5 R from the surface of the earth is …… hours.

The centripetal force on a satellite orbiting round the earth and the gravitational force of earth acting on the satellite both equal F. The net force on the satellite is

A satellite is orbiting the earth close to its surface. A particle is to be projected from the satellite to just escape from the earth. The escape speed from the earth is v_e . Its speed with respect to the satellite