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Gravitation Class 9 MCQ. We covered all the Gravitation Class 9 MCQ in this post for free so that you can practice well for the exam.
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MCQ on Gravitation for Students
A ball is thrown vertically upwards. The acceleration is due to gravity.
(a) is in the direction opposite to the direction of its motion
(b) is in the same direction as the direction of its motion
(c) increases as it comes down
(d) becomes zero at the highest point
Option a – is in the direction opposite to the direction of its motion
The universal law of gravitation states that every object in the universe
(a) Attracts every other object with a force
(b) The force of attraction is proportional to the product of their masses
(c) The force is inversely proportional to the square of the distance between them
(d) All of these
Option d – All of these
Kepler’s laws governing the motion of planets are :
(a) The orbit of a planet is an eclipse with the Sun at one of the foci
(b) The line joining the planet and the Sun sweep equal areas in equal intervals of time
(c) The cube of the mean distance of a planet (r) from the Sun is proportional to the square of its orbital period (T)
(d) All of these
Option d – All of these
According to Kepler, the force acting on an orbiting planet is given by
(a) F = mg
(b) FO<v²/r
(c) F= mgh
(d) None of these
Option a – F = mg
The gravitational force between two objects is F. If the masses of both objects are halved without changing the distance between them, then the gravitational force would become
(a) F/4
(b) F/2
(c) F
(d) 2 F
Option a – F/4
At which of the following locations, the value of g is the largest?
(a) On top of Mount Everest
(b) On top of Qutub Minar
(c) At a place on the equator
(d) A campsite in Antarctica
Option d – A campsite in Antarctica
An apple falls from a tree because of gravitational attraction between the earth and the apple. If F, is the magnitude of the force exerted by the earth on the apple and F₂ is the magnitude of the force exerted by the apple on the earth, then
(a) F₁ is very much greater than F₂
(b) F₂ is very much greater than F₁
(c) F1 is only a little greater than F₂
(d) F1 and F₂ are equal
Option d – F1 and F₂ are equal
The universal law of gravitation explains the phenomenon
(a) The force that binds us to the earth
(b) The motion of the moon around the earth or planets around the Sun
(c) The tides due to the moon and the Sun
(d) All of the these
Option d – All of the these
Acceleration due to gravity for objects on or near the surface of the earth is represented as
(a) g=GM/R²
(b) g=GMm/d²
(c) Both (a) and (b)
(d) Neither (a) nor (b)
Option a – g = GM/R²
The weight of an object at the center of the earth of radius Ris
(a) zero
(b) infinite
(c) R times the weight at the surface of the earth
(d) 1/R² times the weight at the surface of the earth
Option a – zero
Weightlessness experienced while orbiting the earth in a spaceship is the result of
(a) zero gravity
(b) inertia
(c) acceleration
(d) center of gravity
Option a – zero gravity
When an object falls freely to the earth, the force of gravity is
(a) opposite to the direction of motion
(b) in the same direction as that of motion
(c) zero
(d) constant
Option b – in the same direction as that of motion
The weight of a body at the center of the earth is
(a) zero
(b) infinite
(c) same as at other places
(d) slightly greater than that at the poles
Option a – zero
The weight of an object
(a) is the gravity of the matter it contains
(b) refers to its inertia
(c) is the same as its mass but expressed in different units
(d) is the force with which it is attracted to the earth
The force of gravitation between two bodies does not depend on :
(a) their separation
(b) the product of their masses
(c) the sum of their masses
(d) the gravitational constant
Option c – the sum of their masses
The acceleration due to gravity
(a) has the same values everywhere in space
(b) has the same value everywhere on the earth
(c) varies with the latitude on the earth
(d) is greater on the moon due to its smaller diameter
Option c – varies with the latitude on the earth
Newton’s law of gravitation is applicable to
(a) bodies of the solar system only
(b) bodies on the earth
(c) planets only.
(d) all bodies of the universe
Option d – all bodies of the universe
The force that causes acceleration and keeps the body moving along the circular path is acting
(a) towards the center
(b) away from the center
(c) along the tangent to the circular path
(d) in the direction of circular motion
Option a – towards the center
All bodies whether large or small fall with the
(a) same force
(b) same acceleration
(c) same velocity
(d) same momentum
Option b – same acceleration
We covered all the gravitation class 9 MCQ above in this post for free so that you can practice well for the exam.
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