5. what do you mean by luminous intensity ?
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The luminous intensity is a quantity for characterizing a light source. It is defined as the luminous flux per unit solid angle. ... The SI units of the luminous intensity are the candela = lumen per steradian (cd = lm/sr). One candela approximately corresponds to the luminous intensity of a normal candle.
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The luminous intensity is a quantity for characterizing a light source. It is defined as the luminous flux per unit solid angle. ... The SI units of the luminous intensity are the candela = lumen per steradian (cd = lm/sr). One candela approximately corresponds to the luminous intensity of a normal candle.
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