Neet Solved Paper 2013 Question 15
Question: A piece of iron is heated in a flame. If 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
Options:
A) Stefan’s law
B) Wien’s displacement law
C) Kirchoff’s law
D) Newton’s law of cooling
Show Answer
Answer:
Correct Answer: B
Solution:
The equation of Wien?s displacement law, i.e., $ {\lambda_m}T= $ constant.
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