AIPMT PRELIMS2002Physics-Thermodynamics
AIPMT PRELIMS 2002 Physics Black Body Radiation MCQ Question
Type: MCQ-conceptual-Medium-Class 11
Which of the following is best close to an ideal black body :-
A
Black lamp
B
Cavity maintained at constant temperature
C
Platinum black
D
A lump of charcoal heated to high temp.
Correct Answer
Option B
Detailed Explanation
A cavity with a small hole behaves as an ideal black body because it absorbs all incident radiation.
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