[" Calculate radiation power for sphere whose "],[" temperature is "227^(@)C" and radius "2m" and "],[" emissivity "0.8.],[[" (1) "1425W," [AIIMS "-2019]],[" (3) "1255W," (2) "1500W]]

Calculate radiationn powe for sphere whose temperature is 227^(@)C and radius 2 m and emissivity 0.8.

Calculate radiationn powe for sphere whose temperature is 227^(@)C and radius 2 m and emissivity 0.8.

Find the radius of a sphere whose surface area is 154\ c m^2

Find the radius of a sphere whose surface area is 154\ c m^2

Two bodies hae temperatures as 227^(@)C and 727^(@)C ratio of heat radiated by them will be

Calculate power in watts radiated from a filament of an lamp at 2000 k, if the surface area is 0.5 cm^2 and its emissivity is 0.85 .

Find the volume of a sphere whose radius is 0.63 m

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

Calculate the maximum amount of heat which may be lost per second by radiation by a sphere 14cm in diameter at a temperature of 227^(@)C , when placed in an enclosure at 27^(@)C . Given Stefan's constant = 5.7 xx 10^(-8)Wm^(-2)K^(-4) .

Calcualte the maximum amount of heat which may be lost per second by radiation from a sphere of 10 cm in diameter and at a temperature of 227^(@) C when placed in an encloser at a temperature of 27^(@) C. sigma = 5.7xx10^(-8)Wm^(-2)K^(-4) .