45) Heat conducted through unit area and unit thick face per unit time when temperature difference between opposite faces is unity,is called
Answer is:
thermal conductivity
Related Heat transfer MCQ with Answers
Answer is:
intensity of radiation
Answer is:
is equal to its emissivity
Explanation:
A grey body is defined as one whose absorptivity of a surface does not vary with temperature and wavelength of the incident radiation. In other words, if the ratio of emission of a body to that of a black body at a given temperature is constant for all wavelengths, then the body is called a grey body.