The term ‘luminosity’ describes the rate of energy output from a light source.
Answer: Option C
Explanation:
Luminosity defined as the total energy emitted from a light source per second i.e. the rate of energy emitted from a light source. The source can be either as big as a star or as small as a lamp.
Luminosity is measured in terms of Joule per second according to its definition. This is also called Watt (Joule/sec).
