Two long parallel plates of the same emissivity 0.5 are maintained at different temperatures and have radiation heat exchange between them. The radiation shield of emissivity 0.25 placed in the middle will reduce radiation heat exchange to:

Two long parallel plates of the same emissivity 0.5 are maintained at

1.	Two long parallel plates of the same emissivity 0.5 are maintained at different temperatures and have radiation heat exchange between them. The radiation shield of emissivity 0.25 placed in the middle will reduce radiation heat exchange to:
A.	1/2
B.	1/4
C.	3/10
D.	3/5
Answer» D. 3/5