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The dependence of acceleration due to gravity $g$ on the distance $r$ from the centre of the earth, assumed to be a sphere of radius $R$ of uniform density is as shown in figures below. The correct figure is.

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Important Questions on Gravitation

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Alpha Question Bank for Medical: Physics>Chapter 11 - Gravitation>Exercise-3>Q 6

A body is projected vertically from the earth reaches a height equal to earth's radius before returning to earth. The power exerted by the gravitational force is greatest

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Alpha Question Bank for Medical: Physics>Chapter 11 - Gravitation>Exercise-3>Q 7

A particle of mass

m

is thrown upwards from the surface of earth, with a velocity

u

. The mass and the radius of the earth are

M

and

R

respectively.

G

is the gravitational constant and

g

is the acceleration due to gravity on the surface of the earth. The minimum value of

u

so that the particle does not return back to earth is

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Alpha Question Bank for Medical: Physics>Chapter 11 - Gravitation>Exercise-3>Q 8

A particle of mass

M

is situated at the centre of a spherical shell of same mass and radius

a

. The magnitude of the gravitational potential at a point situated at

\frac{a}{2}

distance from the centre, will be

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Alpha Question Bank for Medical: Physics>Chapter 11 - Gravitation>Exercise-3>Q 9

Which one of the following plots represents the variation of the gravitational 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)

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Alpha Question Bank for Medical: Physics>Chapter 11 - Gravitation>Exercise-3>Q 10

The height at which the weight of a body becomes

{\frac{1}{16}}^{t h}

of its weight on the surface of the earth is ___(

R

is the radius of the earth)

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Alpha Question Bank for Medical: Physics>Chapter 11 - Gravitation>Exercise-3>Q 11

A spherical planet has a mass

M_{P}

and diameter

D_{P}

. A particle of mass

m

falling freely near the surface of this planet will experience acceleration due to gravity, equal to

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Alpha Question Bank for Medical: Physics>Chapter 11 - Gravitation>Exercise-3>Q 13

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 the body will be,

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Alpha Question Bank for Medical: Physics>Chapter 11 - Gravitation>Exercise-3>Q 14

Infinite number of bodies, each of mass

2 kg,

are situated on the

x

-axis at distances

1 m, 2 m, 4 m, 8 m, . . . . . . .

, respectively, from the origin. The resulting gravitational potential due to this system at the origin will be,

The dependence of acceleration due to gravity g on the distance r from the centre of the earth, assumed to be a sphere of radius R of uniform density is as shown in figures below. The correct figure is.

Important Questions on Gravitation

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The dependence of acceleration due to gravity $g$ on the distance $r$ from the centre of the earth, assumed to be a sphere of radius $R$ of uniform density is as shown in figures below. The correct figure is.