Which of the following is NOT true for the absorption of light?
A)Transmittance is the fraction of incident light that is not absorbed.
B)Molecules that absorb light are promoted to an excited state.
C)A = −log(T)
D)Molecules that emit light return to the ground state.
E)Irradiance is the energy per second of the light beam.

Question

Quizplus · Accepted Answer

Irradiance is defined as the power of electromagnetic radiation per unit area (surface power density), which is energy per second per unit area, not just the energy per second of the light beam. The definition provided in E is more accurately describing power or intensity rather than irradiance, which necessitates specifying the area over which the power is distributed.

Which of the Following Is NOT True for the Absorption