Units and Measurements (11 Physics)
Master the SI unit system, derived units, and measurement techniques essential for all physics studies.
TL;DR: Master the SI unit system, derived units, and measurement techniques essential for all physics studies.
Written & reviewed by the Syllab.in Academic Team (CBSE/NCERT subject experts) · Updated
Master the SI unit system, derived units, and measurement techniques essential for all physics studies.
Units and Measurements MCQs with Answers & Explanations
Q1. What are the fundamental SI base units for length, mass, and time?
- foot, pound, second
- meter, kilogram, second ✓ (correct)
- cm, gram, second
- inch, ounce, minute
Q2. What is a derived unit?
- Base unit
- Unit obtained by combining base units ✓ (correct)
- Non-standard unit
- Temporary unit
Q3. What is the SI unit of force?
- Dyne
- Newton ✓ (correct)
- Kilogram
- Pascal
Q4. How many meters are in 1 kilometer?
- 10 m
- 100 m
- 1000 m ✓ (correct)
- 10,000 m
Q5. What does the prefix milli- represent?
- 1000
- 0.001 ✓ (correct)
- 100
- 0.01
Q6. What is the SI unit of energy?
- Calorie
- Joule ✓ (correct)
- Watt
- Pascal
Q7. How many centimeters are in 1 inch?
- 2.54 cm ✓ (correct)
- 10 cm
- 1 cm
- 25.4 cm
Q8. What is the significance of significant figures?
- No importance
- Indicates precision of measurement ✓ (correct)
- Used only in chemistry
- Always equal to 3
Q9. What is the SI unit of temperature?
- Degree Celsius
- Degree Fahrenheit
- Kelvin ✓ (correct)
- Rankine
Q10. How do you convert Celsius to Kelvin?
- Add 273.15 ✓ (correct)
- Subtract 273.15
- Multiply by 273.15
- Divide by 273.15
Frequently Asked Questions
Why is the SI system preferred over other systems?
The SI system is universally accepted, systematic, and decimal-based. It simplifies calculations and enables international scientific communication.
What is the difference between accuracy and precision?
Accuracy measures how close a measurement is to the true value. Precision measures how consistent repeated measurements are. Both are important.
More 11 Physics MCQs
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