Question

The peak intensity of radiation from a star named Sigma is 2 x 106 nm. What is the average surface temperature of Sigma rounded to the nearest whole number?

Answer 1

212 i think when rouned it would be 210

might wanna get a 2nd opinion

Answer 2

@sillybilly123 can you take a look at this when you get a chance

Answer 3

Use Wien's Displacment Law (derived from Planck's formula):

\( T =\dfrac{ 2.898 \times 10^{-3}}{\lambda_{\text{peak}} }\)

***If*** i read the qu correctly, these are microwaves and \(T \approx 1 ~ K\)