Test Details

Gravitation

Full chapter test

Dec 25, 9:00 PM

60 minutes

Dec 26, 11:00 PM

50.0 marks

MCQ

25 questions

Er. Sunny Kashyap

I love the way everyone lives.

Class Details

Physics

Class 12th Neet & Cbse

Physics

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Question Text

Question 1 :
Motion of artificial satellite around the earth is powered by :

Question 2 :
Which of the following is the cause of weightlessness experienced while orbiting around earth on a spaceship ?

Question 3 :
The orbital angular velocity vector of a geostationary satellite and the spin angular velocity vector of the earth are

Question 4 :
A man weighs $75 kg$ on the surface of the earth. His weight in a geostationary satellite is:

Question 5 :
Time period of a satellite in an orbit of radius R is T. Its period of revolution in an orbit of radius 4R will be

Question 7 :
While orbiting around the earth in a apaceship, an astronaut experiences

Question 8 :
On a planet where ${ g }_{ planet }=0.2{ g }_{ earth }$. What will be the difference in the height of column filled with mercury in a closed end manometer when the gas is filled withe pressure of $2atm$ on earth (Assuming:outside pressure to be $1atm$ on both planet; Volume of gas remain constant)

Question 9 :
A satellite is in a circular orbit around the earth at an altitude $R$ above the earth's surface, where $R$ is the radius of the earth. If $g$ is the acceleration due to gravity on the surface of the earth, the speed of the satellite is:

Question 10 :
The kinetic energy needed to project a body of mass $m$ from earth's surface $($ radius $R$ $)$ to infinity is

Question 11 :
The ratio of the radii of the planets $R_1$ and $R_2$ is $k$. The ratio of the acceleration due to gravity is $r$. The ratio of the escape velocities from them will be

Question 12 :
The ratio of the acceleration due to gravity as the bottom of a deep mine and that on the surface of the earth is 978/980. Find the depth of the mine, if the density of the earth is uniform throughout and the radius of the earth is 6300 km.

Question 13 :
The diameters of two plantes are in the ration 4:1 and their density in the ration 1:2 The acceleration due to gravity on the planets will be in ratio,

Question 14 :
Assertion: The escape velocity from the surface of Jupiter is less than that from the earth's surface Reason: The radius of Jupiter is smaller than earth

Question 15 :
Rain drops are falling with a constant speed by the time they reach the ground because.

Question 16 :
A satellite orbits the moon far from its surface in a circle of radius $r$. If a second satellite has a greater speed, yet still needs to maintain a circular orbit around the moon, how should the second satellite orbit?

Question 17 :
If $g$ is acceleration due to gravity on the earth's surface, the gain in the potential energy of an object of mass $m$ raised from the surface of earth to a height equal to the radius $R$ of the earth is

Question 18 :
The radius of earth is about 6400 km and that ofmars is 3200 km. The mass of the earth is 10 times the mass of mars. An object weight 200 N on the surface of earth. Its weight on the surface of mars will be.

Question 19 :
There are _____ gravitational lines of force inside a spherically symmetric shell

Question 20 :
An object is taken from a point $P$ to another point $Q$ in a gravitational field:

Question 21 :
At what height the acceleration due to gravity will be reduced to $36\%$ of its value on the surface of the earth?

Question 22 :
Density remaining constant, if earth contracts to half of its present radius, duration of the day would be (in minutes)

Question 23 :
A spherical planet, far out in space, has a mass $M_0$ and diameter $D_0$. A particle of mass $m$ falling freely near the surface of this planet will experience acceleration due to gravity which is equal to:

Question 24 :
The escape velocity for a body projected vertically upwards from the surface of the earth is ${ 11.2 }{ km } { s }^{ -1 }$. If the body is projected in a direction making am angle ${ 45 }^0$ with the vertical, the escape velocity will be

Question 25 :
A man weighs 200 pounds on earth. How much would he weigh on a planet four times as massive as the earth with a radius five times as great?

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