Physics-Significant Figures
NEET Physics Significant Figures Assertion Reason Question
Type: Assertion Reason-assertion-Hard-Class 11
Assertion (A): When rounding the number 3.145 to three significant figures, it becomes 3.14. | Reason (R): If the insignificant digit to be dropped is 5, and the preceding digit is even, the insignificant digit is simply dropped.
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
In the NCERT context, rounding off when the insignificant digit is 5 follows the rule where the preceding even digit remains unchanged, which supports both the assertion and reason.
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