MCQ practice · SSC Physics Board questions · Chapter 1: Physical Quantities and Their Measurements
Which is the unit of luminous intensity?
Think it through first, then pick an option.
- a A
- b K
- c J
- d Cd
Answer and explanation
Correct answer: d Cd
The unit of luminous intensity is the candela. The board prints the symbol as Cd, but the correct symbol is cd.
Why the other options are wrong
- a A: A (ampere) is the unit of electric current, one of the seven fundamental units, not of luminous intensity.
- b K: K (kelvin) is the unit of temperature, one of the seven fundamental units, not of luminous intensity.
- c J: J (joule) is the unit of energy; it is not in the list of the seven fundamental units.
More board questions on this topic
- Which of the following is a derived unit?
- Which one is a derived quantity?
- Which of below is not a fundamental quantity?
- Which is a derived quantity?
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