“Class 8 Physics Made Easy: Force and Pressure for NMMS"

NMMS FORCE AND PRESSURE CLASS 8

Read the Textbook and Practice. 👇

1. Which of the following is a contact force?

A) Gravitational force
B) Magnetic force
C) Frictional force
D) Electrostatic force

2. What is the SI unit of force?

A) Newton (N)
B) Joule (J)
C) Watt (W)
D) Pascal (Pa)

3. Pressure is defined as:

A) Force per unit area
B) Mass per unit volume
C) Speed per unit time
D) Distance per unit time

4. Which instrument is used to measure atmospheric pressure?

A) Barometer
B) Thermometer
C) Hygrometer
D) Ammeter

5. When the area over which a force is applied increases, what happens to the pressure?

A) Increases
B) Decreases
C) Stays the same
D) Becomes zero

6. Which of the following is an example of fluid pressure?

A) Air pressure
B) Frictional pressure
C) Magnetic pressure
D) Electrical pressure

7. A force of 10 N is applied to an area of 5 m². What is the pressure exerted?

A) 2 Pa
B) 5 Pa
C) 50 Pa
D) 15 Pa

8. Which principle states that the pressure applied to a fluid is transmitted uniformly throughout the fluid?

A) Archimedes' Principle
B) Bernoulli's Principle
C) Pascal's Principle
D) Newton's Second Law

9. When an object floats in a fluid, it displaces a volume of fluid equal to its own:

A) Weight
B) Density
C) Volume
D) Mass

10. Which of the following is NOT a factor affecting pressure?

A) Force
B) Area of application
C) Density of the fluid
D) Temperature of the fluid

11. Force can:

A) Only stop motion
B) Only start motion
C) Change the shape of an object
D) Only change direction

12. A push or pull on an object is called:

A) Pressure
B) Force
C) Work
D) Energy

13. Which of the following is a non-contact force?

A) Muscular force
B) Frictional force
C) Magnetic force
D) Mechanical force

14. A force always results in a:

A) Change in time
B) Change in pressure
C) Change in motion or shape
D) Change in mass

15. Force can be measured using a:

A) Thermometer
B) Spring balance
C) Barometer
D) Hygrometer

16. Which force opposes the motion of objects?

A) Magnetic force
B) Gravitational force
C) Frictional force
D) Electrostatic force

17. Muscular force is a type of:

A) Contact force
B) Non-contact force
C) Magnetic force
D) Electrostatic force

18. Which of the following is caused due to the Earth's gravity?

A) Objects floating
B) Objects falling to the ground
C) Objects glowing
D) Objects flying upward

19. The force that attracts objects towards the centre of the Earth is called:

A) Friction
B) Magnetic force
C) Gravitational force
D) Electric force

20. What happens when two forces act in opposite directions?

A) They multiply
B) They cancel out
C) They increase together
D) They form a triangle

21. Pressure is equal to:

A) Area ÷ Force
B) Force × Area
C) Force ÷ Area
D) Force + Area

22. Pressure is more when:

A) Area is large
B) Force is small
C) Area is small
D) Force is zero

23. The SI unit of pressure is:

A) Newton
B) Pascal
C) Joule
D) Watt

24. Why do sharp knives cut better than blunt ones?

A) They look good
B) They have more weight
C) They have less surface area
D) They are longer

25. The pressure exerted by liquids:

A) Decreases with depth
B) Is constant at all depths
C) Increases with depth
D) Is zero

26. Liquids and gases are called:

A) Solids
B) Vapors
C) Fluids
D) Metals

27. Which force allows a straw to suck juice when you suck from it?

A) Friction
B) Gravity
C) Atmospheric pressure
D) Magnetic force

28. A balloon bursts when pressed hard because:

A) Its shape changes
B) The pressure inside increases
C) It becomes light
D) It gets hot

29. Pressure inside a liquid is transmitted:

A) Only upward
B) Only downward
C) Equally in all directions
D) In a zig-zag path

30. In hydraulic systems like car brakes, which principle is used?

A) Archimedes’ Principle
B) Pascal’s Law
C) Bernoulli’s Principle
D) Newton’s Law

31. A camel can walk easily on sand due to:

A) Heavy body
B) Long legs
C) Large feet that reduce pressure
D) Light body

32. School bags have wide straps to:

A) Look attractive
B) Make them heavy
C) Reduce pressure on shoulders
D) Increase friction

33. A nail enters wood easily because:

A) It is strong
B) It is long
C) It has a pointed end
D) It is made of iron

34. Atmospheric pressure is highest at:

A) High mountains
B) Sea level
C) Moon
D) Everest

35. Sucking a liquid through a syringe works on:

A) Gravity
B) Vacuum
C) Atmospheric pressure
D) Friction

36. Pressure is less when:

A) Area is less
B) Force is more
C) Area is more
D) Temperature is more

37. A force can change:

A) Direction
B) Shape
C) Speed
D) All of these

38. A man standing on snow wears snowshoes to:

A) Look tall
B) Reduce force
C) Increase area and reduce pressure
D) Avoid cold

39. The device that shows atmospheric pressure:

A) Anemometer
B) Hydrometer
C) Altimeter
D) Barometer

40. The pressure at the bottom of a lake is:

A) More than at the surface
B) Less than at the surface
C) Same as at the surface
D) Zero

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