A tungsten filament in an incandescent lamp is operated steadily at a temperature of 2900K. The constant b in Wien’s displacement relation has a value 2.9×10−3mK. The speed of light is 3.0×108ms−1.
a. (i) Calculate the wavelength corresponding to maximum emissive power of the filament. Express your answer in nanometres.
b. (ii) Determine the frequency that corresponds to the wavelength obtained in part (i).