Select the option that is true regarding the following two statements labelled Assertion (A) and Reason (R).
(A): An object slips less on a rough surface than a smooth surface.
(R): When a surface is rough, frictional force increases.
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. Both Assertion (A) and Reason (R) are the true and Reason (R) is a correct explanation of Assertion (A)
- Assertion (A): An object slips less on a rough surface than a smooth surface. This statement is true because rough surfaces provide more friction, which helps in preventing slipping.
- Reason (R): When a surface is rough, frictional force increases. This statement is also true because rough surfaces have irregularities that provide more contact points between the surfaces, leading to increased frictional force.
Therefore, Both Assertion (A) and Reason (R) are the true and Reason (R) is a correct explanation of Assertion (A).