Class 9 Physics Gravitation MCQ. We covered all the Class 9 Physics Gravitation MCQ in this post for free so that you can practice well for the exam.
Install our MCQTUBE Android app from the Google Play Store and prepare for any competitive government exams for free.
These types of competitive MCQs appear in the exams like SSC, Railways, Defence, CDS, NDA, State PSC & CSE Exams, etc. We created all the competitive exam MCQs into several small posts on our website for your convenience.
You will get their respective links in the related posts section provided below.
Related Posts:
MCQ on Gravity for Students
Newton’s universal law of gravitation applies to
(a) small bodies only
(b) planets only
(c) both small and big bodies
(d) only valid for the solar system
Option c – both small and big bodies
Two identical spheres of gold are in contact with each other. The gravitational attraction between them is
(a) directly proportional to the square of the radius
(b) directly proportional to the cube of the radius
(c) directly proportional to the fourth power of the radius
(d) inversely proportional to the square of the radius
Option c – directly proportional to the fourth power of the radius
Two masses m1 and m₂ (m₁ <m₂) are released from rest from a finite distance. They start under their mutual gravitational attraction
(a) acceleration of m, which is more than that of m₂.
(b) acceleration of m₂ is more than that of m₁.
(c) centre of mass of the system will remain at rest in all the reference frames
(d) total energy of the system remains constant
Option a – acceleration of m, which is more than that of m₂
The gravitational force Fg between two objects does not depend on
(a) the Sun of masses
(b) the product of masses
(c) the distance between masses
(d) the Gravitational constant
Option a – the Sun of masses
The atmosphere is held to the earth by
(a) winds
(b) clouds
(c) Gravity
(d) None of these
Option c – Gravity
Two air bubbles in water
(a) attract each other
(b) repel each other
(c) neither attract nor repel
(d) None of these
Option a – attract each other
The tides in the sea are primarily due to the
(a) atmospheric effect of the earth.
(b) the gravitational effect of venus on the earth
(c) the gravitational effect of the sun on the earth
(d) the gravitational effect of the moon on the earth
Option d – the gravitational effect of the moon on the earth
The weight of a body at the centre of the earth is
(a) zero
(b) infinite
(c) the same as on the surface of the earth
(d) none of these
Option a – zero
If the earth is at one-fourth of its present distance from the sun, the duration of the year will be
(a) half the present year
(b) one-eight the present year
(c) one-fourth of the present year
(d) one-sixth of the present year
Option b – one-eight the present year
Kepler’s second law regarding constancy of the areal velocity of a planet is a consequence of the law of conservation of
(a) energy
(b) angular momentum
(c) linear momentum
(d) None of these
Option b – angular momentum
A missile is launched with a velocity less than escape velocity. The sum of its kinetic and potential energies is
(a) zero
(b) negative
(c) positive
(d) may be positive, negative or zero.
Option b – negative
Due to the rotation of the earth the acceleration due to gravity g is
(a) maximum at the equator and minimum at the poles
(b) minimum at the equator and maximum at the poles
(c) same at both places
(d) None of these
Option b – minimum at the equator and maximum at the poles
There is no atmosphere on the moon because
(a) it is closer to the earth
(b) it revolves around the earth
(c) it gets light from the sun
(d) the escape velocity of gas molecules is lesser than their root mean square velocity
Option d – the escape velocity of gas molecules is lesser than their root mean square velocity
A satellite is orbiting around the earth near its surface. If its kinetic energy is doubled, then
(a) it will remain in the same orbit.
(b) it will fall on the earth.
(c) it will revolve with greater speed.
(d) it will escape out of the gravitational field of the earth.
Option d – it will escape out of the gravitational field of the earth
The period of a satellite in a circular orbit near a planet is independent of
(a) the mass of the planet
(b) the radius of the planet
(c) the mass of the satellite
(d) All of the above
Option c – the mass of the satellite
In planetary motion
(a) the angular speed remains constant
(b) the total angular momentum remains constant
(c) the linear speed remains constant
(d) neither the angular momentum nor angular speed remains constant
Option b – the total angular momentum remains constant
To an astronaut in a spaceship, the sky appears black due to
(a) the absence of atmosphere in his neighbourhood.
(b) light from the sky is absorbed by the medium surrounding him
(c) the fact at that height, sky radiations are only in the infra-red and the ultraviolet region
(d) None of these
Option a – the absence of atmosphere in his neighbourhood
Weightlessness experienced while orbiting the earth in a spaceship is the result of
(a) inertia
(b) acceleration
(c) zero gravity
(d) centre of gravity
Option c – zero gravity
As we go from the equator to the poles, the value of g
(a) remains the same
(b) decreases
(c) increases
(d) decreases upto latitude of 45°
Option c – increases
A man waves his arms while walking. This is to
(a) keep constant velocity
(b) ease the tension
(c) increase the velocity
(d) balance the effect of earth’s gravity
Option d – balance the effect of earth’s gravity
At sea level, a body will have a minimum weight at
(a) pole
(b) equator
(c) 42° south latitude
(d) 37° north latitude
Option b – equator
If the earth losses its Gravity, then for a body
(a) weight becomes zero, but not the mass
(b) mass becomes zero, but not the weight
(c) both mass and weight become zero
(d) neither mass nor weight become zero
Option a – weight becomes zero, but not the mass
A small satellite is revolving near earth’s surface. It’s orbital velocity will be nearly
(a) 8 km/sec
(b) 11.2 km/sec
(c) 10 km/sec
(d) 6 km/sec
Option a – 8 km/sec
The escape velocity of an object projected from the surface of a given planet is independent of
(a) radius of the planet
(b) the direction of projection
(c) the mass of the planet
(d) None of these
Option b – the direction of projection
We covered all the class 9 physics gravitation mcq above in this post for free so that you can practice well for the exam.
Check out the latest MCQ content by visiting our mcqtube website homepage.
Also, check out:
