Significant Figures (multiplication)
Mediumphysics
Compute (3.42 × 2.1) keeping correct significant figures.
Select the correct option:
Solution
Incorrect! Answer:
7.2
- Multiplication Rule: In multiplication or division, the final result should be rounded to have the same number of significant figures as the factor with the fewest significant figures.
- Analyze Factors:
- 3.42 has 3 significant figures.
- 2.1 has 2 significant figures.
- Raw Calculation: 3.42×2.1=7.182.
- Rounding: The result must be restricted to 2 significant figures.
- Final Result: 7.182 rounds to 7.2.
🔒 Solution Hidden from View
Submit your answer to unlock the detailed step-by-step solution.
About This Question
- Subject
- physics
- Chapter
- physics and measurement
- Topic
- significant figures (multiplication)
- Difficulty
- Medium
- Year
- 2025
This medium difficulty physics question is from the chapter physics and measurement, covering the topic of significant figures (multiplication). It appeared in the 2025 exam. Practice this and similar questions to strengthen your understanding of physics and measurement concepts.
Looking for more practice? Explore all physics questions or browse physics and measurement questions on RankGuru.