Q66) Consider the following statements.

i) Force acting on a unit area of a surface is called impulse.

ii) Friction always acts against the applied force.

iii) For a force to act on an object, it is not necessary to have contact with the object.

Which of the above statements are true?

a) ii only

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b) ii and iii only

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c) i and iii only

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d) i, ii and iii

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Solution

The correct option is B
b) ii and iii only

B)
Explanation: Force acting on a unit area of a surface is called pressure.

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Similar questions

Which of the following is/are true about the frictional force?

1. It acts between all moving objects.

2. It always opposes relative motion between two objects.

3. It is a contact force.

4. It is a non- contact force.

Which of the following statements are correct about the force of friction?

1. It acts on all moving objects.

2. It opposes the relative motion between two objects in contact with each other.

3. It is a contact force.

Newton’s third law of motion states that for every action, there is an equal and opposite reaction.

Which of the following statement can be inferred from the above-mentioned law of motion?

Statement 1 $:$ In every interaction, there is a pair of forces acting on the two interacting objects.

Statement 2 $:$ The magnitude of the force on the first object equals the magnitude of the force on the second object.

Statement 3 $:$ Forces always come in pairs - equal and opposite action-reaction force pairs.

Statement 4 $:$ Force and reaction act on the same body.

Statement 5 $:$ Force and reaction act on two different bodies.

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