Question
Question: Four pieces of iron heated in a furnace to different temperatures show different colours listed belo...
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
Answer
White
Explanation
Solution
At low temperature short wavelength radiation is emitted. As the temperature rise colour of emitted radiation are in the following order
Red→Yellow→Blue→White (at highest temperature)