Question

........ is the SI unit of Luminous intensity.​

Answer 1

Answer:

candela

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 ∆νCs.

Answer 2

• The candela (symbol: cd) is the SI base unit of luminous intensity