Answer:
19320 K
Explanation:
The temperature of a star is related to its peak wavelength by Wien's displacement law:
[tex]T=\frac{b}{\lambda}[/tex]
where
T is the absolute temperature at the star's surface
[tex]b=2.898 \cdot 10^{-3}m\cdot K[/tex] is Wien's displacement constant
[tex]\lambda[/tex] is the peak wavelength
Here we have
[tex]\lambda=150 nm = 150\cdot 10^{-9}nm[/tex]
Substituting into the equation, we find
[tex]T=\frac{2.898\cdot 10^{-3}}{150\cdot 10^{-9}}=19320 K[/tex]
