Question

What is meant by luminous intensity? What is a opaque object.

Answer 1

In photometry, luminous intensity is a measure of the wavelength-weighted power emitted by a light source in a particular direction per unit solid angle, based on the luminosity function, a standardized model of the sensitivity of the human eye

Answer 2

In photomentry, luminous intensity is a measure of the wave length - weighted power emitted by a light source in a particular direction per unit solid angle, based on the luminosity function, a standardized model of the sensitivity of human eye.