A perfect black body is one which______________
A. Is black in colour
B. Reflects all heat
C. Transmits all heat radiations
D. Absorbs heat radiations of all wave lengths falling on it
Answer:D
A perfect black body is one which______________
A. Is black in colour B. Reflects all heat C. Transmits all heat radiations D. Absorbs heat radiations of all wave lengths falling on it