Given below are two statements : one is labelled as Assertion(A) and the other is labelled as Reason (R). In the light of the above statements, choose the correct answer from the options given below :
Physics · Unit dimension and error · vernier callipers and screw gauge
JEE Mains 2024 27 Jan Evening Shift

Question

Given below are two statements : one is labelled as Assertion(A) and the other is labelled as Reason (R). In the light of the above statements, choose the correct answer from the options given below :

G1 Physics · Accepted Answer

Assertion (A) is correct. With a positive zero error, the observed reading is greater than the actual reading. Reason (R) is also correct because zero error may arise due to manufacturing defect or rough handling. However, Reason (R) does not explain why a positive zero error makes the observed reading larger. Therefore, both (A) and (R) are correct but (R) is not the correct explanation of (A).