Question

If the filament of a 100 W bulb has an area of 0.25 cm² and behaves as a perfect blackbody, find the wavelength corresponding to the maximum in its energy distribution.
(a) λ = 3 × 10⁻⁷ m
(b) λ = 4 × 10⁻⁷ m
(c) λ = 5 × 10⁻⁷ m
(d) λ = 6 × 10⁻⁷ m