Physics · JEE

Acceleration due to gravity and its variation with altitude and depth Mock Test for JEE

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Syllabus context

Part of Gravitation in JEE Main Physics.

Free sample questions

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Q1PhysicsUnit 6: Gravitation

Fill in the blank. Atmospheric pressure with increase in altitude.

Q2PhysicsUnit 6: Gravitation

Suppose(God forbid) due to some reason, the earth expands to make its volume eight-fold. What you expect your weight to be?

Q3PhysicsUnit 6: Gravitation

The height at which the value of acceleration due to gravity becomes

50 \%

of that at the surface of the earth. (radius of the earth

=\mathbf{6 4 0 0 k m}

) is

Q4PhysicsUnit 6: Gravitation

If the mass of the body on the surface of the earth is

50 k g,

its mass at the centre of the earth is:

Q5PhysicsUnit 6: Gravitation

A body is weighed at the poles and at the equator. The weight:

Q6PhysicsUnit 6: Gravitation

Assertion The value of acceleration due to gravity does not depend upon the mass of the body. Reason Acceleration due to gravity is a constant quantity.

Q7PhysicsUnit 6: Gravitation

Assertion A particle is projected upwards with speed

v

and it goes to a height

h .

If we double the speed then it will move to height

4 h

Reason In case of earth, acceleration due to gravity

g

varies as

g \propto \frac{1}{r^{2}} r \geq R

Q8PhysicsUnit 6: Gravitation

The ratio of the weight of a body to its mass gives the at the given place

Q9PhysicsUnit 6: Gravitation

The acceleration due to gravity is:

Q10PhysicsUnit 6: Gravitation

Identify the contour lines along which the dip measured at the Earth's surface is equal in magnitude.

Q11PhysicsUnit 6: Gravitation

Suppose that the acceleration of a free fall at the surface of a distant planet was found to be equal to that at the surface of the earth. If the diameter of the planet were twice the diameter of the earth, then the ratio of mean density of the planet to that of the earth would be:

Q12PhysicsUnit 6: Gravitation

A body of mass

\mathrm{m}

is dropped from a height h equal to the radius of the earth (R) above the tunnel dug through the earth as shown in the figure. Ignore the effect of earths rotation and air resistance, M is mass of earth. Choose the correct alternative(s):

Q13PhysicsUnit 6: Gravitation

At what height from the surface of earth will the value of

g

be reduced by

36 \%

from the value at the surface?

\boldsymbol{R}=

6400 k m

Q14PhysicsUnit 6: Gravitation

A research satellite of mass

200 \mathrm{kg}

circles the earth in an orbit of average radius

\frac{3 R}{2},

where

R

is the radius of the earth. Assuming the gravitational pull on a mass

1 \mathrm{kg}

on earth's surface to be

10 \mathrm{N},

the pull on this satellite will be:

Q15PhysicsUnit 6: Gravitation

The diameters of two planets are in ratio

4: 1 .

Their mean densities have ratio

1: 2 .

The ratio of 'g' on the planets will be:

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