Given below are two statements:
Statement (I): The limiting force of static friction depends on the area of contact and independent of materials.
Statement (II): The limiting force of kinetic friction is independent of the area of contact and depends on materials.
In the light of the above statements, choose the most appropriate answer from the options given below:
Statement (I): The limiting force of static friction depends on the area of contact and independent of materials.
Statement (II): The limiting force of kinetic friction is independent of the area of contact and depends on materials.
In the light of the above statements, choose the most appropriate answer from the options given below:
- (A)Statement I is correct but Statement II is incorrect
- (B)Statement I is incorrect but Statement II is correct✓ Correct
- (C)Both Statement I and Statement II are incorrect
- (D)Both Statement I and Statement II are correct
Answer: (B)
Solution
The limiting force of static friction is ; it is independent of the apparent area of contact and depends on the nature of the two surfaces through — so Statement I, which claims the opposite dependence, is incorrect. Kinetic friction is likewise independent of contact area and depends on the materials in contact — Statement II is correct.
JEE Main · 2024 · 27 Jan 2024 · Shift 2 · Single correct option