Physics-Screw Gauge
NEET Physics Screw Gauge Assertion Reason Question
Type: Assertion Reason-assertion-Easy-Class 12
Assertion (A): The least count of a screw gauge determines the smallest length that can be measured accurately by the instrument. | Reason (R): The least count of a screw gauge is calculated by dividing the pitch by the number of divisions on the circular scale.
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
Both the assertion and the reason are true as per the NCERT context. The least count is the smallest measurement the screw gauge can accurately make, and it's calculated by dividing the pitch by the number of circular scale divisions.
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