Gravitation Test

Result

Gravitation Test - 38

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

A shell of mass M and radius R has a point mass m placed at a distance r from its centre. The gravitational potential energy U(r) –v will be

A

B

C

D
Question 2
4 / -1

If V_e and V_o are represent the escape velocity and orbital velocity of satellite corresponding to a circular orbit of radius r, then

A

B

C

D

Solution
Question 3
4 / -1

If r represents the radius of the orbit of a satellite of mass m moving around a planet of mass M, the velocity of the satellite is given by

A

B

C

D
Question 4
4 / -1

Two satellites of mass m₁ and m₂ (m₁ > m₂) are revolving round the earth in circular orbits of r₁ and r₂ (r₁ > r₂) respectively. Which of the following statement is true regarding their speeds V₁ and V₂

A

B

C

D

Solution
Question 5
4 / -1

The centre of earth in new orbit is two times of the earlier orbit. The time period in second orbit is .........hours.

A
4.8

B

C
24

D

Solution
Question 6
4 / -1

As astronaut orbiting the earth in a circular orbit 120 km above the surface of earth, gently drops a spoon out of space-ship. The spoon will

A
Fall vertically down to the earth

B
Move towards the moon

C
Will move along with space – ship

D
Will move in an irregualr way then fall down to earth
Question 7
4 / -1

The period of a satellite in cirular orbit around a planet is independent of

A
The mass of the planet

B
The radius of the planet

C
Mass of the satellite

D
All the three parameters (A), (B) and (C)
Question 8
4 / -1

Two satellites A and B go round a planet p in circular orbits having radii 4 R and R respectively if the speed of the satellite A is 3V, the speed if satellite B will be

A
12V

B
6V

C
4/3 V

D
3/2 V

Solution
Question 9
4 / -1

A small satellite is revolving near earth’s surface. Its orbital velocity will be nearly = ..........kms^–1.

A
8

B
4

C
6

D
11.2
Question 10
4 / -1

A satellite revolves around the earth in an elliptical orbit. Its speed

A
Is the same at all points in the orbit

B
Is greatest when it is closest to the earth

C
Is greatest when it is farthest to the earth

D
Goes on increasing or decresing continuously depending upon the mass of the satellite