The filament of a tungsten light bulb was red at time t1 ora

The filament of a tungsten light bulb was red at time t_1, orange at time t_2, and white at time t_3. Estimate the temperature of the filament at each time. (refer to lab manual for help) 1. 500 degree C 2. 300 degree C 3. 2500 degree C 4. 5800 degree C 5. 1700 degree C 6. 8000 degree C

Solution

The filament temperature t1, when it is in red colour is 500 deg. C.

The filament temperature t2, when it is in orange colour is 1700 deg. C.

The filament temperature t3, when it is in white colour is 2500 deg. C.

Please note that I have answered your question by looking into the spectrum of light and matching it with the wavelength.