Physics Units, Dimensions and Measurement All Topic Question for Revision Test Single Correct MCQ
Published on: September 12, 2026

Significant figures in 3400 are

A
2
B
5
C
6
D
7

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Text Solution

Verified by Experts
The correct answer is:
A
To determine the number of significant figures in the number 3400, we follow the rules for counting significant figures:
  • All non-zero digits are always significant.
  • Any zeros between significant digits are also significant.
  • Leading zeros (zeros to the left of the first non-zero digit) are not significant.
  • Tailing zeros (zeros to the right of the last non-zero digit) are significant only if there is a decimal point present in the number.
In the number 3400, the digits '3' and '4' are significant. The two trailing zeros ('00') are not significant because there is no decimal point indicated.
Hence, 3400 has a total of 2 significant figures.
Therefore, the correct answer is A.

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