NCERT Class VIII Science Solutions: Chapter 11-Force and Pressure Part 1

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Question 1:

As showing in fig is a magnitude of force

Magnitude of Force

In Fig 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?

  1. Magnitude of force applied by A is greater than that of B.

  2. Magnitude of force applied by A is smaller than that of B.

  3. Net force on the block is towards A.

  4. Magnitude of force applied by A is equal to that of B.

Answer: A

Question 2:

As showing in fig is a hammer strikes

Hammer Strikes

In the circuit shown in Fig when the circuit is completed, the hammer strikes the gong. Which of the following force is responsible for the movement of hammer?

  1. Gravitational force alone

  2. Electrostatic force alone

  3. Magnetic force alone

  4. Frictional force alone

Answer: C

Question 3:

During dry weather, while combing hair, sometimes we experience hair flying apart. The force responsible for this is

  1. Force of gravity

  2. Electrostatic force

  3. Force of friction

  4. Magnetic force

Answer: B

Question 4:

Fig shows a container filled with water. Which of the following statements is correct about pressure of water?

As showing in fig is a container filled with water

A Container Filled with Water

Answer: D

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