1.

In solar radiation, the intensity of radiation is maximum around the wavelength λm. If R is the radius of the sun and c is the velocity of light, the mass lost by the sun per unit time is proportional to(a) R2 / λ4C2(b) R2 / λ2C2(c) R3 / λ4C3(d) R3 / λ4C2

Answer»

Correct Answer is: (a) R/ λ4C2

Let T be the temperature of the surface of the sun.

∴ Wien constant, b = λmT.

The energy lost by the sun per unit time is (σT4) (4πR2) = mc2.



Discussion

No Comment Found

Related InterviewSolutions