Q. Four pieces of iron heated in a furnace to different temperatures show different colours listed below. Which one has the highest temperature
A) White
B) Yellow
C) Orange
D) Red
Explanation
(a) At low temperature short wavelength radiation is emitted. As the temperature rises colour of emitted radiations are in the following order
Red $\rightarrow$ Yellow $\rightarrow$ Blue $\rightarrow$ White (at highest temperature)
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.