The three graphs shwon here show the total energy output of four different stars per second plotted against the wavelength that they radiate. All the four stars are behaving like black bodies. They can be assumed to be spherical bodies. Study the graphs below and answer the following questions.

Take `b=3xx10^(-3) mK`.
What is the peak wavelength of star A and star B respectively?

Options

A. 400nm ,800 n,
B. 375 nm, 750 nm
C. 280 nm, 340 nm
D. 450 nm, 225 nm

Answer

V

Explanation

`lambda_(m) T=b`
`lambda_(mA)=(3xx10^(-3))/8000=0.375 xx10^(-6) m =375nm`
`lambda'_(mH)=(3xx10^(-3))/4000=750 nm`