NEET2020Physics-Units and Measurements
NEET 2020 Physics Significant Figures MCQ Question
Type: MCQ-conceptual-Easy-Class 11
Taking into account of the significant figures, what is the value of 9.99 m − 0.0099 m?
A
9.980 m
B
9.9 m
C
9.9801 m
D
9.98 m
Correct Answer
Option D
Detailed Explanation
9.99 − 0.0099 = 9.9801. When applying significant figures for subtraction, the result should have the same number of decimal places as the quantity with the fewest decimal places. 9.99 has 2 decimal places and 0.0099 has 4 decimal places, so the result should be rounded to 2 decimal places: 9.98 m. The correct answer is D.
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