Physics-Screw Gauge
NEET Physics Screw Gauge Assertion Reason Question
Type: Assertion Reason-assertion-Easy-Class 12
Assertion (A): The rachet arrangement in a screw gauge prevents excessive pressure on the object being measured. | Reason (R): Excessive pressure can change the diameter of the object being measured.
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 mentions that the rachet arrangement in screw gauge must be utilized to avoid undue pressure on the wire, which can change the diameter.
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