Gravitation Test

Result

Gravitation Test - 29

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
4 / -1

If the radius of the earth were to shrink by two percent, its mass remaining the same, the acceleration due to gravity on the earth’s surface would

A
decrease by 2%

B
increase by 2%

C
increase by 4%

D
decrease by 4%

Solution
Question 2
4 / -1

If different planets have the same density but different radii, then the acceleration due to gravity on the surface of the planet is related to the radius (R) of the planet as

A

B

C

D

Solution
Question 3
4 / -1

A spherical planet far out in space has a mass M₀ and diameter D₀. A particle of mass m falling freely near the surface of this planet will experience an acceleration due to gravity which is equal to

A

B

C

D

Solution
Question 4
4 / -1

Two equal masses m and m are hung from a balance whose scale pans differ in height by h. If ρ is the mean density of earth, then the error in weighing is

A
zero

B
4 πGρmh/3

C
8 πGρmh/3

D
2 πGρmh/3

Solution
Question 5
4 / -1

One goes from the centre of the earth to a distance two third the radius of the earth, where will the acceleration due to gravity be the greatest ?

A
At the centre of the earth

B
At a height half the radius of the earth

C
At a height one third the radius of the earth

D
At a height two third the radius of the earth

Solution
Question 6
4 / -1

The radii of two planets are respectively R₁ and R₂ and their densities are respectively ρ₁ and ρ₂. The ratio of the accelerations due to gravity (g₁/g₂) at their surface is

A

B

C

D

Solution
Question 7
4 / -1

Which of the following cannot be used for measuring time in a spaceship orbiting around the earth ?

A
atomic clock

B
quartz watch

C
electric clock

D
pendulum clock
Question 8
4 / -1

If R is the radius of the earth and g is acceleration due to gravity on the earth’s surface, the mean density of earth is

A

B

C

D

Solution
Question 9
4 / -1

There are two bodies of masses 100,000 kg and 1000 kg separated by a distance of 1 m. At what distance from the smaller body, the intensity of gravitational field will be zero ?

A
m/9

B
m/10

C
m/11

D
10 m/11

Solution
Question 10
4 / -1

A solid sphere is of density ρ and radius R. The gravitational field at a distance r from the centre of the sphere, where r < R, is

A

B

C

D

Solution