Two black discs each of diameter 50 cm are placed parallel to each other concentrically at a distance of one meter. The discs are maintained at 1000 K and 500 K. Calculate the heat flow between the discs when no other surface is present

Two black discs each of diameter 50 cm are placed parallel to each oth

1.	Two black discs each of diameter 50 cm are placed parallel to each other concentrically at a distance of one meter. The discs are maintained at 1000 K and 500 K. Calculate the heat flow between the discs when no other surface is present
A.	317.27 W
B.	417.27 W
C.	517.27 W
D.	617.27 W
Answer» C. 517.27 W