Si Units Fundamentals
Which of the following is NOT an SI base unit?
Select the correct option:
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About This Question
- Subject
- physics
- Chapter
- physics and measurement
- Topic
- si units fundamentals
- Difficulty
- Easy
- Year
- 2025
Solution
Correct Answer:
Liter
- SI Base Units: The International System of Units (SI) defines seven fundamental base units from which all other units are derived.
- The Seven Base Units:
- Mass: kilogram (kg)
- Luminous Intensity: candela (cd)
- Electric Current: ampere (A)
- Length: meter (m)
- Time: second (s)
- Temperature: kelvin (K)
- Amount of substance: mole (mol)
- Analysis of Options: Kilogram, Candela, and Ampere are all on this list.
- Conclusion: Liter is a unit of volume. Since volume is defined as (length)3, the SI unit for volume is the cubic meter (m³). The liter (1 L =10−3 m³) is a non-SI unit accepted for use with SI.
This easy difficulty physics question is from the chapter physics and measurement, covering the topic of si units fundamentals. It appeared in the 2025 exam.
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