Home
Class 12
PHYSICS
A small mass m is moved slowly from the ...

A small mass `m` is moved slowly from the surface of the earth to a height `h` above the surface. The work done (by an external agent) in doing this is

A

mgh, for alll values of h

B

mgh, for h ltlt R

C

`1/2 mgh,` for h = R

D

`-1/2 mgh`,for h = R

Text Solution

Verified by Experts

The correct Answer is:
B, C
Promotional Banner

Topper's Solved these Questions

  • GRAVITATION

    RESNICK AND HALLIDAY|Exercise PRACTICE QUESTIONS (LINKED COMPREHENSION)|6 Videos

  • GRAVITATION

    RESNICK AND HALLIDAY|Exercise PRACTICE QUESTIONS (INTEGER TYPE)|4 Videos

  • GRAVITATION

    RESNICK AND HALLIDAY|Exercise PRACTICE QUESTIONS (SINGLE CORRECT CHOICE TYPE)|16 Videos

  • GEOMETRICAL OPTICS : REFRACTION

    RESNICK AND HALLIDAY|Exercise Practice questions(Integers)|4 Videos

  • HEAT-MEASUREMENT AND TRANSFER

    RESNICK AND HALLIDAY|Exercise PRACTICE QUESTIONS( INTEGER TYPE)|5 Videos

Similar Questions

Explore conceptually related problems

A particle of mass 'm' is raised from the surface of earth to a height h = 2R. Find work done by some external agent in the process. Here, R is the radius of earth and g the acceleration due to gravity on earth's surface.

If an object of mass m is taken from the surface of earth (radius R) to a height 5R, then the work done is

A ball is thrown vertically upwards with a velocity equal to half the escape velocity from the surface of the earth. The ball rises to a height h above the surface of the earth. If the radius of the earth is R, then the ratio h/R is

A satellite of mass m is revolving around the Earth at a height R above the surface of the Earth. If g is the gravitational intensity at the Earth’s surface and R is the radius of the Earth, then the kinetic energy of the satellite will be:

The work done to raise a mass m from the surface of the earth to a height h, which is equal to the radius of the earth is

The work done to raise a mass m from the surface of the earth to a height h, which is equal to the radius of the earth, is :

A charge is moved in an electric field of a fixed charge distribution from point A to another point B slowly. The work done by external agent in doing so is 100J . What is the change in potential energy of the charge as it moves from A to B ? What is the work done by the electric field of the charge distribution as the charge moves from A to B ?

A satellite of mass m is orbiting around the earth at a height h above the surface of the earth. Mass of the earth is M and its radius is R . The angular momentum of the satellite is independent of

A satellite of mass m is orbiting around the earth at a height h above the surface of the earth. Mass of the earth is M and its radius is R . The angular momentum of the satellite is independent of :