Home

What is the correct answer?

4

Planck's law holds good for

A. Black bodies

B. Polished bodies

C. All coloured bodies

D. All of the above

Correct Answer :

A. Black bodies


Related Questions

If the temperature of a solid surface changes from 27°C to 627°C,… The amount of radiation mainly depends on The total radiation from a black body per second per unit area is ________… Wiens law states that the wave length corresponding to ________ is proportional… The most commonly used method for the design of duct size is the In convection heat transfer from hot flue gases to water tube, even though… In counter flow heat exchangers The amount of radiation mainly depends upon the Temperature of steam at around 540°C can be measured by The concept of overall coefficient of heat transfer is used in case of… Heat transfer takes place as per Which of the following would lead to a reduction in thermal resistance? The heat transfer takes place according to A grey body is one whose absorptivity Which of the following has maximum value of thermal conductivity? Which of the following is the case of heat transfer by radiation? The rate of energy emission from unit surface area through unit solid… Fourier's law of heat conduction is valid for The ratio of Nusselt number and the product of Reynold's number and Prandtl… The energy distribution of an ideal reflector at higher temperatures is… Cork is a good insulator because it has Film coefficient is defined as Inside diameter of tube The use of heat exchangers is made in Heat is transferred by all three modes of transfer, viz. conduction, convection… The ratio of the emissive power and absorptive power of all bodies is… Fourier's law of heat conduction gives the heat flow for The process of heat transfer from one particle of the body to another… Which of the following property of air does not increase with rise in… The insulation ability of an insulator with the presence of moisture would When heat is transferred by molecular collision, it is referred to as…