MCQ Questions for Class 9 Science Chapter 10 Gravitation

MCQ Questions for Class 9 Science Chapter 10 Gravitation will help them to focus on the most important topics and to better understand the material. Many students find themselves struggling with managing their time efficiently, especially when it comes to studying for exams.

It help you in active learning and also improve your problem-solving ability. Teachers can make the learning process more engaging and interactive for students by providing students to learn through Chapter 10 Class 9 Science CBSE MCQ Questions with answers.

Chapter 10 Gravitation Class 9 Science MCQ Questions

1. The acceleration due to gravity
(a) has the same value 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
▶ (c) varies with the latitude on the earth

2. A boy is whirling a stone tied to a string in a horizontal circular path. If the string breaks, the stone
(a) will continue to move in the circular path
(b) will move along a straight line towards the centre of the circular path
(c) will move along a straight line tangential to the circular path
(d) will move along a straight line perpendicular to the circular path away from the boy
▶ (c) will move along a straight line tangential to the circular path

3. An astronaut in the orbit in a spacecraft feels weightlessness
(a) due to the absence of gravity inside
(b) due to the fact that spacecraft has no energy
(c) because acceleration in the orbit is equal to acceleration of gravity outside
(d) there is no gravity outside
▶ (c) because acceleration in the orbit is equal to acceleration of gravity outside

4. Law of gravitation gives the gravitational force between
(a) the Earth and a point mass only
(b) the Earth and Sun only
(c) any two bodies having some mass
(d) two charged bodies only
▶ (c) any two bodies having some mass

5. What happens to the acceleration due to gravity with the increase in altitude from the surface of the earth?
(a) Increases
(b) Decreases
(c) First decreases and then increases
(d) Remains same
▶ (b) Decreases

6. Newton’s law of gravitation is valid
(a) on the earth only
(b) on the moon only
(c) in the laboratory only
(d) everywhere
▶ (d) everywhere

7. When an object is thrown upward, the force of gravity is
(a) opposite to the direction of motion
(b) in the same direction as the direction of motion
(c) becomes zero at the highest point
(d) increases as it rises up
▶ (a) opposite to the direction of motion

8. The type of force that exists between two charged bodies is
(a) only gravitational
(b) only electrostatic
(c) neither (a) nor (b)
(d) both (a) and (b)
▶ (d) both (a) and (b)

9. The value of quantity G in the law of gravitation
(a) depends on mass of Earth only
(b) depends on radius of Earth only
(c) depends on both mass and radius of Earth
(d) is independent of mass and radius of the Earth
▶ (d) is independent of mass and radius of the Earth

10. The mass of a body is measured to be 12 kg on the earth. If it is taken to the moon, its mass will be
(a) 12 kg
(b) 6 kg
(c) 2 kg
(d) 72 kg
▶ (a) 12 kg

11. Which of the following statements is true?
(a) g is same at all places on the surface of earth.
(b) g has its maximum value at the equator.
(c) g is less at the earth’s surface than at a height above it or a depth below it.
(d) g is greater at the poles than at the equator.
▶ (d) g is greater at the poles than at the equator.

12. Pascal is a unit of
(a) pressure
(b) force
(c) linear momentum
(d) energy
▶ (a) pressure

13. A coin and a feather are dropped together in a vacuum. Then
(a) the coin will reach the ground first
(b) the feather will reach the ground first
(c) both will reach the ground at the same time
(d) the feather will not fall down
▶ (c) both will reach the ground at the same time

14. Loss of weight of a body immersed in a liquid is
(a) equal to the weight of the liquid displaced
(b) more than the weight of the liquid displaced
(c) less than the weight of the liquid displaced
(d) zero
▶ (a) equal to the weight of the liquid displaced

15. Gravitational force is the
(a) weakest force
(b) strongest force
(c) short-range force
(d) non-central force
▶ (a) weakest force

16. Acceleration due to gravity is maximum at (R is the radius of earth)
(a) a height R/2 from the earth’s surface
(b) the centre of the earth
(c) the surface of the earth
(d) a depth R/2 from earth’s surface
▶ (c) the surface of the earth

17. The atmosphere is held to the Earth by
(a) gravity
(b) wind
(c) clouds
(d) Earth’s magnetic field
▶ (a) gravity

18. The value of acceleration due to gravity is high if
(a) mass and radius both are small
(b) mass is small and radius is large
(c) mass is large and radius is small
(d) mass and radius both are large
▶ (c) mass is large and radius is small

19. Where will it be profitable to purchase one kilogram sugar?
(a) At poles
(b) At equator
(c) At 45° latitude
(d) at 40° latitude
▶ (b) At equator

20. The mass of a body is increased 4 fold and mass of other body is increased 16 fold. How should the distance between them be changed to keep the same gravitational force between them?
(a) 4 times
(b) 1/4 times
(c) 8 times
(d) 1/8 times
▶ (c) 8 times

21. Orbital velocity of earth satellite does not depend on
(a) mass of the earth
(b) mass of the satellite
(c) radius of the earth
(d) acceleration due to gravity
▶ (b) mass of the satellite

22. The force of attraction between two unit point masses separated by a unit distance is called
(a) gravitational potential
(b) acceleration due to gravity
(c) gravitational field
(d) universal gravitational constant
▶ (d) universal gravitational constant

23. In spaceship moving in space, person experience weightlessness as the value of
(a) mass is zero
(b) acceleration due to gravity is zero
(c) gravitational force is zero
(d) none of these
▶ (b) acceleration due to gravity is zero

24. When a mango falls from a mango tree then
(a) only the Earth attracts the mango.
(b) only the mango attracts the Earth.
(c) both the mango and the Earth attract each other.
(d) both the mango and the Earth repel each other.
▶ (c) both the mango and the Earth attract each other.

25. The buoyant force on a body acts in a
(a) vertically downward direction
(b) vertically upward direction
(c) horizontal direction
(d) direction between the horizontal and the vertical
▶ (b) vertically upward direction