Significant Figures
Number of significant figures in 0.0040700 is:
Select the correct option:
Solution
5
Rules for significant figures:
- Leading Zeros: Zeros at the beginning of a number (0.00...) are never significant. They only indicate the position of the decimal point.
- Captive Zeros: Zeros between non-zero digits are always significant (the '0' in 407).
- Trailing Zeros: Zeros at the end of a number after a decimal point are significant (they indicate precision). Digits: 4, 0, 7, 0, 0 are significant. Total = 5.
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About This Question
- Subject
- physics
- Chapter
- physics and measurement
- Topic
- significant figures
- Difficulty
- Medium
- Year
- 2025
Solution
Correct Answer:
5
Rules for significant figures:
- Leading Zeros: Zeros at the beginning of a number (0.00...) are never significant. They only indicate the position of the decimal point.
- Captive Zeros: Zeros between non-zero digits are always significant (the '0' in 407).
- Trailing Zeros: Zeros at the end of a number after a decimal point are significant (they indicate precision). Digits: 4, 0, 7, 0, 0 are significant. Total = 5.
This medium difficulty physics question is from the chapter physics and measurement, covering the topic of significant figures. It appeared in the 2025 exam.
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