Class 8 Physics | Winner Science https://winnerscience.com Science Articles for Winners Fri, 25 Sep 2026 05:37:15 +0000 en-US hourly 1 https://wordpress.org/?v=7.1.2 Mastering Force and Pressure: 20 Challenging MCQs with Solutions https://winnerscience.com/mastering-force-and-pressure-20-challenging-mcqs-with-solutions/ https://winnerscience.com/mastering-force-and-pressure-20-challenging-mcqs-with-solutions/#comments Fri, 25 Sep 2026 05:21:54 +0000 https://winnerscience.com/?p=4370 Once you know the basics of Force and Pressure, the next step is to practice numerical and reasoning questions. These 20 difficult MCQs cover pressure calculations, unit conversions, net force, liquid pressure, and atmospheric pressure. Additionally, let us start with class 8 force and pressure difficult questions. Practice them with

The post Mastering Force and Pressure: 20 Challenging MCQs with Solutions first appeared on Winner Science.

]]> Once you know the basics of Force and Pressure, the next step is to practice numerical and reasoning questions. These 20 difficult MCQs cover pressure calculations, unit conversions, net force, liquid pressure, and atmospheric pressure.

Additionally, let us start with class 8 force and pressure difficult questions.

Practice them with pen and paper. Use the solutions at the end to check steps of your working for class 8 force and pressure difficult questions.

Quick Revision: Formulas and Tips

  • Pressure P = F ÷ A. This also gives F = P × A and A = F ÷ P.
  • Convert units before calculating: 1 cm² = 0.0001 m² and 1 kPa = 1,000 Pa.
  • A block has the same weight on every face, so it exerts the greatest pressure on its smallest face and the least on its largest face.
  • Forces along the same line add up if they act in the same direction and are subtracted if they act in opposite directions. A net force of zero means the forces are balanced.
  • Balanced forces do not change the state of rest or motion of an object.
  • Atmospheric pressure at sea level is about 10⁵ Pa (100 kPa).
  • Liquid pressure increases with depth, and at a given depth it acts equally in all directions.

How to use this set: work out each question on paper.

Additionally, compare with the answer key.

For class 8 force and pressure difficult questions if your answer does not match, read the solution and redo calculation.

Practice Questions: 20 Difficult MCQs

1. A force of 300 N acts on an area of 0.15 m². The pressure is:

(a) 45 Pa

(b) 450 Pa

(c) 20,000 Pa

(d) 2,000 Pa

2. A force of 90 N acts on an area of 30 cm². The pressure is:

(a) 3 kPa

(b) 30 kPa

(c) 300 kPa

(d) 0.3 kPa

3. A box weighing 120 N rests on a table with a face of area 0.04 m² touching the table. It is turned so that a face of area 0.01 m² touches the table. The pressure:

(a) becomes half

(b) doubles

(c) becomes 4 times

(d) becomes 16 times

4. In a tug of war, team A pulls the rope with 450 N to the right and team B pulls with 380 N to the left. The net force on the rope is:

(a) 70 N towards A

(b) 830 N towards A

(c) 0 N

(d) 70 N towards B

5. A book weighing 15 N rests on a table. The upward force exerted by the table on the book is:

(a) 0 N

(b) 30 N

(c) 15 N

(d) 7.5 N

6. Three forces act on a box along the same line: 12 N towards the east, 5 N towards the west and 7 N towards the west. The net force is:

(a) zero

(b) 24 N east

(c) 12 N east

(d) 2 N west

7. A tall bottle has three holes at different heights on its side and is filled with water. Water spurts out farthest from the:

(a) lowest hole

(b) top hole

(c) middle hole

(d) all holes equally

8. Atmospheric pressure at sea level is about:

(a) 10 Pa

(b) 100,000 Pa

(c) 1,000 Pa

(d) 10,000,000 Pa

9. Take atmospheric pressure as 10⁵ Pa. The force exerted by air on one side of a tabletop of area 0.5 m² is about:

(a) 5,000 N

(b) 500,000 N

(c) 50,000 N

(d) 5 N

10. A rubber suction cup sticks firmly to a smooth wall because:

(a) of glue on the cup

(b) of gravity

(c) of magnetic force

(d) the outside air pressure is greater than the pressure inside after the air is squeezed out

11. A girl weighing 450 N stands on both feet. Each foot has an area of 150 cm². The pressure on the ground is:

(a) 3,000 Pa

(b) 7,500 Pa

(c) 15,000 Pa

(d) 30,000 Pa

12. A block placed on a face of area 0.02 m² exerts a pressure of 4,000 Pa on the floor. The weight of the block is:

(a) 80 N

(b) 320 N

(c) 20 N

(d) 8 N

13. We cannot drink through a straw that has a hole above the liquid level because:

(a) gravity increases

(b) air enters through the hole and the pressure inside the straw does not fall below the outside pressure

(c) of friction

(d) the straw gets blocked

14. A glass filled to the brim with water is covered with a card and turned upside down. The card stays in place and the water does not spill. This is because of:

(a) magnetic force

(b) friction between the card and the glass

(c) gravity holding the water

(d) atmospheric pressure pushing the card upward

15. Two metal hemispheres were joined and the air inside was pumped out. Teams of horses could not pull them apart because:

(a) of magnetic attraction

(b) of glue

(c) atmospheric pressure outside pushes the two halves together

(d) of gravity

16. A camel walks easily on desert sand because its feet:

(a) are lighter than other animals’ feet

(b) are broad, so the pressure on the sand is small

(c) are on hard ground

(d) are sticky

17. A cart moves at constant speed on a straight road. The engine pushes it forward with 500 N and friction acts backward with 500 N. Which statement is correct?

(a) The net force is 1,000 N forward

(b) The cart speeds up

(c) The cart stops at once

(d) The net force is zero and the speed stays constant

18. At a given depth inside a liquid, the pressure is:

(a) greatest downward

(b) greatest upward

(c) the same in all directions

(d) zero sideways

19. Which changes will increase the pressure exerted by a block on a table?

(i) Increasing the weight, keeping the area the same

(ii) Decreasing the area of contact, keeping the weight the same

(iii) Increasing the area of contact, keeping the weight the same

(iv) Decreasing the weight, keeping the area the same

(a) (i) and (ii)

(b) (i) and (iii)

(c) (ii) and (iv)

(d) (iii) and (iv)

20. When more air is pumped into a football, the pressure inside it increases because:

(a) air becomes heavier

(b) more air particles hit the inner walls more often

(c) gravity increases

(d) the ball becomes hot

Answers and Solutions

QAnsSolution
1(d)P = F ÷ A = 300 ÷ 0.15 = 2,000 Pa.
2(b)30 cm² = 0.003 m². P = 90 ÷ 0.003 = 30,000 Pa = 30 kPa.
3(c)Pressure = weight ÷ area. Before: 120 ÷ 0.04 = 3,000 Pa. After: 120 ÷ 0.01 = 12,000 Pa. The pressure becomes 4 times.
4(a)Net force = 450 − 380 = 70 N, in the direction of the stronger team (A).
5(c)The book is at rest, so the forces are balanced. The upward force equals the weight, 15 N.
6(a)Forces towards the west = 5 + 7 = 12 N. Net = 12 − 12 = 0. The forces are balanced.
7(a)Pressure increases with depth, so the lowest hole (greatest depth) gives the strongest jet.
8(b)Atmospheric pressure at sea level is about 1 × 10⁵ Pa (roughly 100,000 Pa).
9(c)F = P × A = 10⁵ × 0.5 = 50,000 N.
10(d)Pressing the cup removes air, so the higher outside air pressure holds it against the wall.
11(c)Total area = 2 × 150 = 300 cm² = 0.03 m². P = 450 ÷ 0.03 = 15,000 Pa.
12(a)Weight = P × A = 4,000 × 0.02 = 80 N. (On a 0.08 m² face the pressure would be 1,000 Pa.)
13(b)Air entering the hole keeps the pressure inside the straw equal to the outside pressure, so the liquid is not pushed up.
14(d)Atmospheric pressure acts upward on the card and holds it in place.
15(c)With almost no air inside, the atmospheric pressure outside pushes the halves together strongly.
16(b)Broad feet have a large area, so the pressure on the sand is small and the camel does not sink.
17(d)The forces are equal and opposite, so the net force is zero. The cart continues at constant speed.
18(c)At a given depth, liquid pressure acts equally in all directions.
19(a)Pressure = force ÷ area. It increases with more force (weight) or with less area.
20(b)More air particles strike the inner walls more often, so the gas pressure increases.

Keep Practicing

Try the other practice sets for this chapter:

Found a mistake or want more chapters? Leave a comment below and we will update this post.

The post Mastering Force and Pressure: 20 Challenging MCQs with Solutions first appeared on Winner Science.

]]> https://winnerscience.com/mastering-force-and-pressure-20-challenging-mcqs-with-solutions/feed/ 1 Force and Pressure MCQs Class 8: 20 Easy Questions + Answers https://winnerscience.com/force-and-pressure-mcqs-class-8-20-easy-questions-answers/ https://winnerscience.com/force-and-pressure-mcqs-class-8-20-easy-questions-answers/#comments Thu, 24 Sep 2026 11:09:19 +0000 https://winnerscience.com/?p=4367 Force and Pressure is one of the most important chapters in Class 8 Physics, and it is also one of the easiest to score in. This post gives you 20 easy multiple-choice questions (MCQs) on force, types of force, pressure, liquid pressure and atmospheric pressure. Every question comes with the

The post Force and Pressure MCQs Class 8: 20 Easy Questions + Answers first appeared on Winner Science.

]]> Force and Pressure is one of the most important chapters in Class 8 Physics, and it is also one of the easiest to score in. This post gives you 20 easy multiple-choice questions (MCQs) on force, types of force, pressure, liquid pressure and atmospheric pressure.

Every question comes with the correct answer and a short solution at the end, so you can check your understanding straight away.

Class 8 Physics Force and Pressure MCQs

Quick Revision: Key Points

  • Force is a push or a pull. Its SI unit is the newton (N).
  • A force can change the speed, the direction of motion or the shape of an object. It cannot change the mass.
  • Contact forces: muscular force and friction. Non-contact forces: gravitational, magnetic and electrostatic forces.
  • Pressure = force ÷ area. Its SI unit is the pascal (Pa), where 1 Pa = 1 N/m².
  • For the same force, a smaller area gives more pressure and a larger area gives less pressure.
  • Liquids exert pressure on the bottom and walls of the container, and the pressure increases with depth.
  • Gases exert pressure on the walls of their container in all directions.
  • Atmospheric pressure is caused by the weight of the air above us, and it decreases as we go higher.

How to use this set: attempt all 20 MCQs without looking at the answers. Then check the answer key. Scoring 18-20 means you know the chapter well; 14-17 is good; below 14 means it is worth revising the points above and trying again.

Practice Questions: 20 Easy MCQs

1. A push or a pull on an object is called:

(a) energy

(b) work

(c) power

(d) force

2. The unit of force is named after:

(a) Galileo

(b) Isaac Newton

(c) Blaise Pascal

(d) Albert Einstein

3. Which of the following is a contact force?

(a) Gravitational force

(b) Magnetic force

(c) Muscular force

(d) Electrostatic force

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

(a) Gravitational force

(b) Muscular force

(c) Frictional force

(d) Force of a push

5. A football lying at rest starts moving when it is kicked. The force has changed its:

(a) shape

(b) mass

(c) state of motion

(d) colour

6. When we press a rubber ball, the force changes its:

(a) mass

(b) shape

(c) colour

(d) density

7. Two forces of equal size act on an object in opposite directions along the same line. These forces are called:

(a) balanced forces

(b) unbalanced forces

(c) contact forces

(d) gravitational forces

8. The force acting per unit area is called:

(a) energy

(b) speed

(c) weight

(d) pressure

9. If the force stays the same but the area is doubled, the pressure becomes:

(a) double

(b) half

(c) the same

(d) four times

10. One pascal is equal to:

(a) 1 N·m²

(b) 1 kg/m²

(c) 1 N/m²

(d) 1 m²/N

11. Liquids exert pressure on:

(a) only the bottom of the container

(b) only the top surface

(c) only the walls of the container

(d) the bottom and the walls of the container

12. Gases exert pressure:

(a) only on the bottom of the container

(b) only on the lid

(c) on the walls of the container in all directions

(d) nowhere

13. The pressure exerted by the layer of air around the Earth is called:

(a) liquid pressure

(b) atmospheric pressure

(c) muscular pressure

(d) frictional pressure

14. We do not feel the atmospheric pressure because:

(a) it is zero

(b) it is balanced by the pressure inside our body

(c) air has no weight

(d) we are used to gravity

15. Objects fall towards the ground because of:

(a) magnetic force

(b) friction

(c) gravitational force

(d) muscular force

16. A comb rubbed with dry hair attracts small pieces of paper. The force acting is:

(a) electrostatic force

(b) magnetic force

(c) muscular force

(d) gravitational force

17. When a bullock pulls a cart, the force used is:

(a) magnetic force

(b) muscular force

(c) gravitational force

(d) electrostatic force

18. School bags have wide straps in order to:

(a) increase the pressure on the shoulders

(b) reduce the weight of the bag

(c) reduce the pressure on the shoulders

(d) make the bag look good

19. A drawing pin has a pointed tip in order to:

(a) make it lighter

(b) make it look neat

(c) reduce friction

(d) exert a large pressure at the tip

20. The wall of a dam is made thicker at the bottom because:

(a) water at the top is heavier

(b) water pressure increases with depth

(c) it looks better

(d) it costs less

Answers and Solutions

QAnsSolution
1(d)A push or a pull is a force.
2(b)The unit of force, the newton, is named after Isaac Newton. Pascal is named after Blaise Pascal (unit of pressure).
3(c)Muscular force acts through contact. Gravitational, magnetic and electrostatic forces act without contact.
4(a)Gravitational force acts without touching. Muscular force, friction and a push need contact.
5(c)The ball changed from rest to motion, so the force changed its state of motion.
6(b)Pressing a rubber ball changes its shape.
7(a)Equal and opposite forces along the same line are balanced forces. Their net effect is zero.
8(d)Pressure = force ÷ area, that is, force per unit area.
9(b)Pressure = force ÷ area. If area doubles, pressure becomes half.
10(c)1 pascal = 1 newton per square metre (1 N/m²).
11(d)Liquids exert pressure on the bottom and on the walls of the container.
12(c)Gases exert pressure on the walls of the container in all directions.
13(b)The pressure of the air around the Earth is called atmospheric pressure.
14(b)The pressure inside our body balances the atmospheric pressure outside, so we do not feel it.
15(c)The Earth attracts objects towards its centre by gravitational force.
16(a)A charged (rubbed) body attracts small pieces of paper by electrostatic force.
17(b)The force exerted by the muscles of animals or humans is muscular force.
18(c)A wide strap spreads the weight over a large area, so the pressure on the shoulder is smaller.
19(d)A small area at the tip means a large pressure for the same force, so the pin goes in easily.
20(b)Pressure of water increases with depth, so the dam must be stronger at the bottom.

Keep Practising

Try the other practice sets for this chapter:

Found a mistake or want more chapters? Leave a comment below and we will update this post.

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