Suppose That We Double the Electrical Power Flowing into the Filament

Multiple Choice

Suppose that we double the electrical power flowing into the filament of an incandescent bulb. By what factor will the most probable photon energy $\varepsilon_{p}$ increase?

A) $2^{1 / 4}$
B) $2^{1 / 3}$
C) $2^{1 / 2}$
D) 2
E) 4
F) 8
G) 16