Sign in
12thPass logo
New chatPYQ LibraryDoubtsRank report
Sign in to see Recents

Your guest activity stays on this device

Sign in to save progress →
Sign in

Gravitation question

2014 · Q149
Guest · filters and generic practice availableBrowsing as a guest · PYQ filters and generic practice are available. Sign in only for personalised features and saved progress.
  1. PYQ Library
  2. /NEET
  3. /Physics
  4. /Gravitation
  5. /2014 · Q149

Gravitation question

2014 · Q149

NEETPhysicsGravitationMCQ+4 / −1
Dependence of intensity of gravitational field (E) of earth with distance (r) from centre of earth is correctly represented by
  1. A
    AIPMT 2014 Physics - Gravitation Question 53 English Option 1
  2. B
    AIPMT 2014 Physics - Gravitation Question 53 English Option 2
  3. C
    AIPMT 2014 Physics - Gravitation Question 53 English Option 3
  4. D
    AIPMT 2014 Physics - Gravitation Question 53 English Option 4
View written solutionFree

Correct answer: A

AIPMT 2014 Physics - Gravitation Question 53 English Explanation

For a point inside the earth i.e. r < R

E=−GMR3rE = - {{GM} \over {{R^3}}}rE=−R3GM​r

where M and R be mass and radius of the earth respectively. At the centre, r = 0

∴\therefore∴ E = 0

For a point outside the earth i.e. r > R,

E=−GMr2E = - {{GM} \over {{r^2}}}E=−r2GM​

On the surface of the earth i.e, r = R

E=−GMR2E = - {{GM} \over {{R^2}}}E=−R2GM​

The variation of E with distance r from the centre is as shown in the figure.

PreviousNext

More from Gravitation

  • A particle of mass 'm' is kept at rest at a height 3R from the surface of earth, where 'R' is radius of earth and 'M' is mass of earth. The minimum speed with which it should be projected , so that it does not return back, is (g is…2013 · MCQ
  • The radius of a planet is twice the radius of earth. Both have almost equal average mass densities. VP and VE are escape velocities of the planet and the earth, respectively, then2013 · MCQ
  • A body of mass 'm' is taken from the earth's surface to the height equal to twice the radius (R) of the earth. The change in potential energy of body will be2013 · MCQ
  • Infinite number of bodies, each of mass 2 kg are situated on x-axis at distance 1 m, 2 m, 4 m, 8 m, . . . , respectively, from the origin. The resulting gravitational potential due to this system at the origin will be2013 · MCQ
  • If ve​ is escape velocity and vo​ is orbital velocity of a satellite for orbit close to the earth's surface, then these are related by2012 · MCQ
  • Which one of the following plots represents the variation of gravitiational field on a particle with distance r due to a thin spherical shell of radius R? (r is measured from the centre of the spherical shell)2012 · MCQ
  • A spherical planet has a mass MP and diameter DP. A particle of mass m falling freely near the surface of this planet will experience an acceleration due to gravity, equal to2012 · MCQ
  • The height at which the weight of a body becomes (161​)th, its weight on the surface of earth (radius R), is2012 · MCQ