''The inside of Ferry's black body is blackened but nickel polished outside.'' Why?

What is a black body ?

A car is left in Sunlight on a hot day with all the window closed. After sometime, it is found that she inside of a car is considerably warmer than the air outside. Why?

For perfectly black body emissivity (e) is

''Lamp black and platinum black are used as perfect black body one for absorption of heat radiation.'' Why ?

Why should we not eat polished rice?

Inside of cell as compared to outside have

(a) Describe the principle of (i) a thermopile and (ii) a bolometer and show how these devices are used. (b) Define the term black body. What is meant by black body radiation ? As the temeprature of a black body rises, what changes take place in (i) the total energy radiated from it and (ii) the energy distribution amongst the wavelengths radiated ?

Which body will emit more radiation under the similar condition, a black body or polished body ?

While cooking, if the bottom of the vessel is getting blackened on the outside, it means that

A spherical body of area A and emissivity e=0.6 is kept inside a perfectly black body. Total heat radiated by the body at temperature T