Force and Pressure MCQs Quiz Multiple Choice Questions & Answers

1. With the increase in the weight of an object the pressure

1. increases
2. decreases
3. remains unchanged
4. none of these

2. Wheel is made circular, because

1. it minimises friction
2. it increases friction
3. to make them attractive
4. none of these

3. Tyres are provided with deep grooves on their surface to

1. reduce the cost of material used
2. increase the friction
3. decrease the friction
4. make them attractive

4. To increase pressure

1. area of contact is increased
2. area of contact is decreased
3. magnitude of thrust is decreased
4. none of these

5. The unit of pressure is

1. joule
2. newton
3. pascal
4. none of these

6. The SI unit of force is

1. joule
2. kg/m²
3. newton
4. pascal

7. The magnetic force is a

1. contact force
2. force at distance
3. consequential force
4. none of these

8. The force which an object exerts on any other object is

1. gravitational force
2. magnetic force
3. electrostatic force
4. frictional force

9. The force of friction

1. increases with the weight of body
2. decreases with the weight of body
3. is not affected by the weight of body
4. none of these

10. The deep grooves in the tyre of a tractor

1. decrease friction
2. increase friction
3. make it stable
4. make tyre more attractive

11. Rockets have a special streamlined body in order to

1. increase friction
2. reduce friction
3. make them attractive
4. none of these

12. One pascal is the pressure generated by

1. force of 1 N on 1 m²
2. force of 1 kgf on 1 m²
3. force of 1 N on 1000 cm²
4. force of 1 N on 1 cm²

13. Magnetic force causes

1. attraction only
2. repulsion only
3. both attraction and repulsion
4. none of these

14. If area of contact is increased, then

1. pressure increases
2. pressure decreases
3. pressure remains constant
4. none of these

15. Gravitational force is a

1. contact force
2. consequential force
3. action-at-a-distance force
4. none of these

16. Friction is

1. always a disadvantage
2. always an advantage
3. sometimes a disadvantage and sometimes an advantage
4. neither an advantage nor a disadvantage

17. Friction

1. produces heat
2. causes wear and tear
3. opposes motion
4. all of these

18. Force has

1. only magnitude
2. only direction
3. both magnitude and direction
4. neither magnitude nor direction

19. Burning of a meteor in the atmosphere is due to

1. electrostatic force
2. magnetic force
3. frictional force
4. gravitational force

20. A stone falling from the roof of a house is an example of

1. frictional force
2. magnetic force
3. gravitational force
4. electrostatic force

21. A cricketer catches a ball. The force coming in action is

1. contact force
2. gravitational force
3. frictional force
4. all of these

22. A boy is pulling a cart by a force of 100 N. The frictional force experienced by the cart is 20 N. The force that causing the motion of the cart is

1. 100 N
2. 120 N
3. 80 N
4. 5 N

23. A box of weight 400 N is kept on the floor. The area of contact is 4 m². The pressure exerted by the box on the floor is

1. 100 Pa
2. 200 Pa
3. 300 Pa
4. 400 Pa

24. Opening a door is an example of .............

1. Non contact force
2. Spring force
3. Contact force
4. Magnetic force

25. What is the cause of change in motion or change in the state of motion?

1. Atmospheric Pressure
2. Friction
3. Pressure
4. Force

26. A charged balloon attaches to a wall because of ..........

1. Electrostatic force
2. Magnetic force
3. Muscular force
4. Gravitational force

27. The unit of force is ...............

1. Dyne
2. kg. weight
3. Newton
4. All of these

28. What is force?

1. Pull
2. both a and b
3. Push
4. None of these

29. A body is said to be under balanced forces when the resultant force applied on that body is ........

1. Zero
2. Infinite
3. One
4. None of these

30. The ratio of force, acting perpendicular to the area, on which it acts is known as ..........

1. Friction
2. Presure
3. Force
4. Density

31. The pressure of the water at the bottom of the pond is .......... at the surface of the pond.

1. Higher than
2. Same
3. Lower than
4. either lower or higher

32. As we go to the higher altitude the atmospheric pressure ............

1. Decreases
2. Remains same
3. Increases
4. Cannot say

33. The force involved in falling an apple from a tree is

1. Contact force
2. Electrostatic force
3. Magnetic force
4. Gravitational force

34. When we press the bulb of a dropper with its nozzle kept in water, air in the dropper is seen to escape in the form of bubbles. Once we release the pressure on the bulb, water gets filled in the dropper. The rise of water in the dropper is due to

1. pressure of water
2. gravity of the earth
3. shape of rubber bulb
4. atmospheric pressure