GK
PHYSICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which of the following is the SI unit for Luminous Intensity?
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Ampere
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Kelvin
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Candela
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Mole
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Explanation:
Detailed explanation-1: -The SI unit of luminous intensity is candela.
Detailed explanation-2: -The candela (cd) is defined by taking the fixed numerical value of the luminous efficacy of monochromatic radiation of frequency 540 × 1012 Hz, Kcd, to be 683 when expressed in the unit lm W−1, which is equal to cd sr W−1, or cd sr kg−1 m−2 s3, where the kilogram, meter and second are defined in terms of h, c and ∆Cs.
Detailed explanation-3: -The candela is the base unit within the International System of Units (SI) that is used for such measurements of light.
Detailed explanation-4: -The SI unit of Luminance is candela per square meter (cd/m2).
There is 1 question to complete.