A blackbody emits net radiation at 60W when it is at `727^(@)`C Find power radiated when it is a `1227^(@)`C.Surrounding temperaure is `227^(@)`C .

A blackbody emits net radiation at 60W when it is at 727^(@)C .Find net power radiated when it is a 1227 ^(@)C Surrounding temperaure is 227^(@)C

A body radiates heat at the rate of 5 cal/ m^(2)-s when its temperature is 227^(@)C . The heat radiated by the body when its temperature is 727^(@)C is

A cube a = 3.0 cm on each side radiates energy at the rate of P = 20 J//s when its temperature is 727^(@)C and surrounding temperature 27^(@)C. Determine its emissivity.

A Fey 's blackbody is at 727^(@)C . What is the power radiated per unit area through its hole ?

A body radiates heat at the rate of 4cal//m^(2)//s , when its temperature is 227^(@)C . What is the heat radiated by the same body when its temperature is 727^(@)C ?

A black body emits radiations of maximum intensity at a wavelength of Å 5000 , when the temperature of the body is 1227^(@)C . If the temperature of the body is increased by 1000^(@)C , the maximum intensity of emitted radiation would be observed at

A black body emit heat at the rate of 20 W , when its tempertaure is 227^(@)C Another black body emits heat at the rate of 15 W , when its temperature is 227^(@)C . Compare the area of the surface of the two bodies, if the surrounding is at NTP

Ratio of rate of radiation of heat of body at 227^(@)C to that of the same body at 27^(@)C is