CBSE Class 8 Science Chapter 8 Force And Pressure Multiple Choice Questions
” Cbse Class 8 Science Chapter 8 Mcqs “
Question 1. In the figure, two boys, A and B, are shown applying force on a block. If the block moves towards the right, which one of the following statements is correct?
- The magnitude of force applied by A is greater than that of B.
- The magnitude of the force applied by A is smaller than that of B.
- Net force on the block is towards A.
- The magnitude of force applied by A is equal to that of B
Answer: 1. The Magnitude of force applied by A is greater than that of B.
” Force And Pressure Class 8 “
Question 2. In the circuit shown in the figure, when the circuit is completed, the hammer strikes the gong. Which of the following forces is responsible for the movement of a hammer?
- Gravitational force alone
- Electrostatic force alone
- Magnetic force alone
- Frictional force alone
Answer: 3. Magnetic force alone
Question 3.
A brick is kept in three different ways on a table, as shown in the figure. The pressure exerted by the brick on the table will be
- Maximum in position a
- Maximum in position c
- Maximum in position b
- Equal in all cases
Answer: 1. Maximum in position a
” Types Of Forces Class 8 “
Question 4. The figure shows a container filled with water. Which of the following statements is correct about the pressure of water?
- Pressure at A > Pressure at B > Pressure at C
- Pressure at A = Pressure at B = Pressure at C
- Pressure at A < Pressure at B > Pressure at C
- Pressure at A < Pressure at B < Pressure at C
Answer: 4. Pressure at A < Pressure at B < Pressure at C
Read And Learn More CBSE Class 8 Science Multiple Choice Questions
Question 5.
A water tank has four taps fixed at points A, B, C, and D as shown in the figure. The water will flow out at the same pressure from taps at
- B and C
- C and D
- A and B
- A and C
Answer: 1. B and C
” Pressure Exerted By Objects “
Question 6. P, Q, and Rand S are four solid objects having the same mass. Which object is exerting the least pressure on the table?
- P
- Q
- R
- S
Answer: 2. Q
Question 7. Type of force where only attraction is found
- Electrostatic force
- Magnetic force
- Gravitational force
- Both (a) and (b)
Answer: 3. Gravitational force
Question 8. The wear and tear in the machine part is due to
- Electrostatic force
- Muscular force
- Frictional force
- Gravitational force
Answer: 3. Frictional force
” Liquid Pressure Experiment “
Question 9. Like poles exert a force of
- Attraction
- Repulsion
- Both 1 and 2
- None of these
Answer: 4. None of these
Question 10. A block of mass 2 kg tied with a rope is going down under the force of gravity of 20 N.
” Atmospheric Pressure Demonstration “
How much force is required by the hand to stop the motion of the block?
- 10 N
- 20 N
- 30 N
- 40 N
Answer: 2. 20 N
Question 11. When a stone is rotated on a circular path uniformly, the effect of the force will be
- Change in direction and magnitude of motion.
- Change in shape of an object.
- Change in direction of motion only.
- Change in magnitude only.
Answer: 3. Change in direction of motion only.