(a)[1]
Determine the wavelength at which the radiation reaches its maximum brightness.
(b)[1]
The visible part of the electromagnetic spectrum lies between $4.0 \times 10^{-7}\,\text{m}$ and $7.0 \times 10^{-7}\,\text{m}$. The radiation in (a) is just beyond the visible section of the electromagnetic spectrum. State the name of the spectral region that contains the radiation in (a).
(c)[3]
Determine the frequency of the radiation in (a). The speed of light is $3.0 \times 10^8\,\text{m s}^{-1}$.