Question

The wavelength corresponding, to emission of energy maxima of a star is
4000 Aº. Compute the temperature of the star.(1Aº = 10–8 cm).

Answer 1

Answer:

1/4000×10^-8 A°

100/4000×10^-8

0.204×10^-9

Answer 2

Answer:

7245K.

Explanation:

To find the temperature of the star we use the formulae of Wein's Law by which we can find the surface temperature of a particular star. The We use this equation to determine the short wavelength spectrum or the high frequency spectrum for any of the thermal radiation. Here to consider the black body is also justified.

So, the temperature T will be 0.2898/λ, where λ is the given wavelength of the star. So, T=0.2898/4*10^-5 which on solving we will get the temperature of the star as 7245K.