Question

Q.No. 8 What is the ratio of the energy per second
radiated by the filament of a lamp at 2500 k to that radiated
at 2000 k, assuming the filament is a black body radiator? [4]​

Answer 1

Answer:

The ratio of the energy per second radiated by the filament of a lamp at 250k to that radiated at 2000k, assuming the filament is a blackbody radiator? The filament of a particular electric lamp can be considered as a 90%blackbody radiator. calculate the energy per second radiated when its temperature is 2000k if its surface area is 10∧-6 m²