109 The temperature of a perfect black body is 727 C and its

Last updated: 6/28/2023

109 The temperature of a perfect black body is 727 C and its area is 0 1 m If stefan s constant is 5 67 x 10 watt m K then heat radiated by it in 1 minute is 1 8100 cal 3 810 cal 2 81000 cal 4 81 cal