Propagation Addition
Mediumphysics
When adding two measured quantities (with absolute errors ΔA, ΔB), resultant absolute error is:
Select the correct option:
Solution
Incorrect! Answer:
ΔA + ΔB
In addition or subtraction, the absolute errors always add up for the maximum possible error.
- If Z=A+B or Z=A−B
- The maximum absolute error in Z is ΔZ=ΔA+ΔB. This reflects the worst-case scenario where errors in both measurements contribute in the same direction.
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About This Question
- Subject
- physics
- Chapter
- experimental skills and error analysis
- Topic
- propagation addition
- Difficulty
- Medium
- Year
- 2025
Solution
Correct Answer:
ΔA + ΔB
In addition or subtraction, the absolute errors always add up for the maximum possible error.
- If Z=A+B or Z=A−B
- The maximum absolute error in Z is ΔZ=ΔA+ΔB. This reflects the worst-case scenario where errors in both measurements contribute in the same direction.
This medium difficulty physics question is from the chapter experimental skills and error analysis, covering the topic of propagation addition. It appeared in the 2025 exam.
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