Gravitation Test

Result

Gravitation Test - 43

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

What does not change in the field of central force

A
Potential energy

B
Kinetic energy

C
linear momentum

D
Angular momentum

Solution
Question 2
4 / -1

A thin uniform annular disc (See figure) of mass M has outer radius 4R and inner radius 3R. The work required to take a unit mass from point P on its axis to infinity is..............

A

B

C

D

Solution
Question 3
4 / -1

Suppose the gravitational force varies inversely as the n^th power of distance the time period of planet in circular orbit of radius R around the sun will be proportional to

A

B

C

D

Solution
Question 4
4 / -1

If the radius of the earth were to shrink by 1% its mass remaning the same, the acceleration due to gravity on the earth’s surface would

A
Decrease by 2%

B
Remain unchanged

C
Increase by 2%

D
Increases by 1%

Solution
Question 5
4 / -1

A body of mass m is taken from earth surface to the height h equal to radius of earth, the increase in potential energy will be

A
mg R

B

C
2 mgR

D

Solution
Question 6
4 / -1

An artificial satellite moving in a circular orbit around earth has a total (kinetic + potential energy) E_o, its potential energy is

A

B

C

D

Solution
Question 7
4 / -1

Two bodies of masses m₁ and m₂ are initially at rest at infinite distance apart. They are then allowed to move towards each other under mutual agravitational attraction Their relative velocity of apporach at sepration distance r between them is

A

B

C

D

Solution
Question 8
4 / -1

A geostationary satellite orbits around the earth in a circular orbit of radius 3600 km the time period of a satellite orbiting a few hundred kilometres above the earth’s surface (earth = 6400 km) will approximately be = ...... h

A
1/2

B
1

C
2

D
4

Solution
Question 9
4 / -1

The depth of at which the value of acceleration due to gravity becomes 1/n the time the value of at the surface is (R = radius of earth)

A
R/n

B

C
R/n²

D

Solution
Question 10
4 / -1

An object weights 72 N on the earth. Its weight at a height R/2 from earth is = .............. N

A
32

B
56

C
72

D
zero

Solution