WAEC Physics 2020 Objective — Question 47
Question 47 of 50 from the West African Examinations Council (WAEC) Physics 2020 Objective paper, with the correct answer and a full explanation.
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Which of the following units is not fundamental? A. Metre B. Kilogram C. Joule D. Candela
- A. Metre
- B. Kilogram
- C. JouleCorrect
- D. Candela
Explanation
Joule is not a fundamental unit; it is a derived unit. There are only seven (7) known fundamental units: mass (kg), length (m), time (s), temperature (K), current (A), amount of substance (mol) and luminous intensity (cd).
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