Question

A piece of iron is heated in a flame. It first becomes dull red
then becomes reddish yellow and finally turns to white hot.
The correct explanation for the above observation is
possible by using [2013]
(a) Wien’s displacement law
(b) Kirchoff’s law
(c) Newton’s law of cooling
(d) Stefan’s law

Answer 1

Answer:

Stefan's law is your answer

Explanation:

hope it will help you

Answer 2

Answer:

If A iron piece is heated in the flame, then the colour of the iron piece will be changed as the temperature will be increased and this happens due to Wien's displacement law. So if the temperature increases continuously then the wavelength will be changed. So the colour will be changed.