The wavelength at which the maximum monochromatic emissive power occurs for a black body, is (where, T = absolute temperature of the black body)?

Related Mcqs:

Heat flux increases with temperature drop beyond the Leiden frost point in the plot of heat flux vs. temperature drop for a boiling liquid, because___________________?

A. Convection becomes important B. Conduction becomes important C. Radiation becomes important D. Sub-cooled boiling occurs...

Radiator of an automobile engine is a ______________ type of heat exchanger?

A. Co-current B. Cross-current C. Counter-current D. Direct contact...

Fqra cold viscous feed, backward feed gives _____________ than forward feed?

A. A higher capacity B. A lower capacity C. Lower economy D. None of these...

Kirchoff’s law is applicable to________________?

A. Monochromatic radiation only B. Total radiation only C. Both A. and B. D. Only volumes and not to surfaces...

In an interphase heat transfer process, the equilibrium state corresponds to equality of temperature in the two phases, while the condition for equilibrium in an interphase mass transfer process is equality of___________________?

A. Concentrations B. Chemical potentials C. Activity co-efficients D. Mass transfer co-efficients...