If each square metre, of sun's surface radiates energy at the rate of `6.3xx10^(7) jm^(-2) s^(-1)` and the Stefan's constant is `5.669xx10^(-8) Wm^(-2) K^(-4)` calculate the temperature of the sun's surface, assuming Stefan's law applies to the sun's radiation.

If each square cm of the sun's surface radiates energy at the rate of 6.42xx10^(3) Js^(-1) cm^(-2) , calculate the temperature of the sun's surface in degree celsius, assuming Stefan's law applies to the radiation. (Stefan's constant = 5.67xx10^(-8)Wm^(-2)K^(-4) )

Calculate the temperature at which a perfect black body radiates at the rate of 1 W cm^(-2) , value of Stefan's constant, sigma = 5.67 xx 10^(-8) W m^(-2)K^(-4)

Calculate the temperature at which a perfect black body radiates at the rate of 1 W cm^(-2) , value of Stefan's constant, sigma = 5.67 xx 10^(-5) W m^(-2) K^(-8)

Calculate the temperature at which a perfect black body radiates at the rate of 1 W cm^(-2) , value of Stefan's constant, sigma = 5.67 xx 10^(-5) W m^(-2) K^(-8)

Sun radiates energy at the rate of 3.6xx10^(26)J//s . The rate of decrease in mass of sun is (Kgs^(1)) .

If the sun's surface radiates heat at 6.3 xx 10^(7) Wm^(-2) . Calculate the temperature of the sun assuming it to be a black body (sigma = 5.7 xx 10^(-8)Wm^(-2)K^(-4))

The sun radiates energy at the rate of 6.4xx10^(7)Wm^(-2) . Calculate its temperature assuming it to be a black body.

If the rate of loss of solar energy by radiation is 4.48 xx 10^(36) watt and the radius of the sun is 6.95 xx 10^5 km, what will be the temperature of the sun ?

A full radiator at 0^(@)C radiates energy at the rate of 3.2 xx 10^(4) erg cm^(-2) s^(-1) . Find (i) Stefan's constant and (ii) the amount of heat radiated per second by a sphere of radius 4 cm and at a temperature of 1000^(@)C .