Physics-(general)
NEET Physics (general) Assertion Reason Question
Type: Assertion Reason-assertion-Easy-Class 12
Assertion (A): The accuracy of a physical balance depends on minimizing friction between its components. | Reason (R): A sharp knife-edge and a smooth plate reduce the friction between the knife-edge and the plate.
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.
Correct Answer
Option A
Detailed Explanation
The NCERT context states that minimizing friction is crucial for the accuracy of a physical balance, and this is achieved by using a sharp knife-edge and a smooth plate, which supports the assertion with the reason.
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