Answer:
According to Wien’s Law:
[tex]\lambda_{peak} = \frac{2.9 \times 10^{6} }{T(K)}[/tex]
where;
[tex]\lambda_{peak}[/tex] is the wavelength
T(K) is the temperature in Kelvin
Putting the values given in the above equation:
[tex]{T(K)} = \frac{2.9 \times 10^{6} }{\lambda_{peak}}[/tex]
[tex]{T(K)} = \frac{2.9 \times 10^{6} }{3 \times 10^{3}}}[/tex]
T(K) = 0.966×[tex]10^{3}[/tex]