Which of the following have same number of significant figures?
A. 0.00253
B. 1.0003
C. 15.0
D. 163
Choose the correct answer from the options given below
A. 0.00253
B. 1.0003
C. 15.0
D. 163
Choose the correct answer from the options given below
Show Hint
Significant figures include all meaningful digits in a number. Use the rules for counting significant figures carefully, especially for decimals and trailing zeros.
- B and C only
- C and D only
- A, B and C only
- A, C and D only
The Correct Option is D
Solution and Explanation
Significant figures represent all the digits in a number that are meaningful in terms of precision. They include all non-zero digits, zeros between non-zero digits, and trailing zeros in decimal numbers. Here is the breakdown:
- 0.00253 : Contains 3 significant figures (leading zeros are not counted).
- 1.0003 : Contains 5 significant figures (includes all digits, including zeros between non-zero digits).
- 15.0 : Contains 3 significant figures (the trailing zero is significant in decimal numbers).
- 163 : Contains 3 significant figures (all digits are non-zero).
Thus, 0.00253 (option A), 15.0 (option B), and 163 (option C) all have the same number of significant figures, which is 3.
Therefore, the correct answer is option (4).
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