State Stefan's law. Sketch graphs showing the distribution of energy in the spectrum of black body radiation at three temperatures, and indicate which curve corresponds to the highest temperature.

State Stefan's law and Wien's displacement law. Draw graphs showing the distribution of energy in the spectrum of a black body. Explain what quantity is plotted against the wavelength . By considering how this energy distribution varies with tempaerature expalin the colour changes which occur when a piece of iron is heated from cold to near the melting point.

Which of the Maxwell distribution curves (obtained at different temperatures) shown in the following figure corresponds to the highest temperature of the gas ?

Name the law which helps us to explain the distribution of energy in the spectrum of a black body for (i) short wavelength only (ii) long wavelength only.

In the figure, the distribution of energy density of the radiation emitted by a black body at a given temperature is shown. The possible temperature of the black body is

A black body is at temperature of 500 K . It emits energy at rate which is proportional to

At a definit temperature (T), the distribution of speeds is given by the curve. In the curve points A, B and C indicates the speeds corresponding to :

A black body is at a temperature 300 K . It emits energy at a rate, which is proportional to

If the radius of a star is R and it acts as a black body, what would b the temperature of the star, in which the rate of energy production is Q ?

If the radius of a star is R and it acts as a black body, what would b the temperature of the star, in which the rate of energy production is Q ?

Following graphs shows the variation in the intensity of heat radiations by the the black body and frequency at a fixed temperature . Choose the correct option.