MCQ IN COMPUTER SCIENCE & ENGINEERING

Detailed explanation-1: -Photometry is the science of measuring visible light in units that are weighted according to the sensitivity of the human eye. It is a quantitative science based on a statistical model of the human visual response to light-that is, our perception of light-under carefully controlled conditions.

Detailed explanation-2: -Photometry is the study and measurement of light. In modern photometry sciences, the radiant power of each wavelength is weighted and determined by a luminosity function which models humans’ sensitivity to brightness. Today we call the study of light Photometrics.

Detailed explanation-3: -Generally speaking, photometry is the study of the transfer of radiant energy in the form of light. Rather than measuring light in terms of energy rate, the visual effect is taken into account. The visual sensitivity of the “standard observer” is described in terms of the response of the human eye.

Detailed explanation-4: -– Photometry. – To express the “quantity amount” of light. – Colorimetry. –To express the “color feeling” of light. Light and radiation.

Detailed explanation-5: -Photometry is the measurement of light, which is defined as electromagnetic radiation detectable by the human eye. It is thus restricted to the visible region of the spectrum (wavelength range from 360 nm to 830 nm), and all the quantities are weighted by the spectral response of the eye.