Physics-Significant Figures
NEET Physics Significant Figures MCQ Question
Type: MCQ-conceptual-Easy-Class 11
Which of the following statements about significant figures is correct?
A
Trailing zeros in a number without a decimal point are always significant.
B
When rounding, if the digit to be dropped is 5, the preceding digit is always increased by 1.
C
The number 2.74 5 rounded to three significant figures becomes 2.74.
D
In scientific notation, all digits in the base number are considered insignificant.
Correct Answer
Option C
Detailed Explanation
The number 2.74 5 rounded off to three significant figures becomes 2.74 because the preceding digit (4) is even, confirming the rounding rule. The other statements are incorrect as per the NCERT context regarding significant figures.
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