Physics-Friction
NEET Physics Friction MCQ Question
Type: MCQ-conceptual-Easy-Class 11
Which of the following methods can effectively reduce kinetic friction in machines?
A
Using ball bearings between moving parts.
B
Increasing the contact area between surfaces.
C
Applying brakes to the moving parts.
D
Increasing the weight of the machine.
Correct Answer
Option A
Detailed Explanation
Ball bearings reduce kinetic friction by minimizing the area of contact and allowing rolling motion, as mentioned in the NCERT text.
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