AP EAMCET Engineering 2014 Code A Solved Paper

Question : 98 of 160

Marks: +1, -0

A very small hole in an electric furnace is used for heating metals. The hole nearly acts as a black body. The area of the hole is 200mm2. To keep a metal at 727°C, heat energy flowing through this hole per sec, in joules is (σ=5.67×10−8Wm−2k−4).