18 A tungsten lamp at a temperature of 3000 K has surface

Last updated: 6/14/2023

18 A tungsten lamp at a temperature of 3000 K has surface area of 0 3 cm If the lamp has emissivity of 0 4 the rate of heat radiated is NCERT Pg 295 1 40 W 3 90 W 2 50 W 4 55 W