Physics-Friction
NEET Physics Friction Assertion Reason Question
Type: Assertion Reason-assertion-Medium-Class 11
Assertion (A): Rolling friction is generally less than static or sliding friction. | Reason (R): During rolling, the surfaces in contact are momentarily deformed, resulting in a finite area of contact.
A
Both A and R are true and R is the correct explanation of A.
B
Both A and R are true but R is not the correct explanation of A.
C
A is true but R is false.
D
A is false but R is true.
Correct Answer
Option A
Detailed Explanation
The NCERT context explains that rolling friction is smaller than static or sliding friction due to the momentary deformation and finite contact area between surfaces.
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