Absorptivity of a perfect black body is unity. Which of the following has maximum absorptivity ?

Absorptivity of a perfect black body is unity. Which of the following

1.	Absorptivity of a perfect black body is unity. Which of the following has maximum absorptivity ?
A.	aluminium foil
B.	refractory bricks
C.	iron plate
D.	coke breeze
Answer» E.

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Absorptivity of a perfect black body is unity. Which of the following has maximum absorptivity ?

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