Question

1. A (360nm) film of air exists between two glass slides. what wavelength (s) of visible light does it reflect? What single color is the reflection and what single Color is transmitted 2 use the following visible Color boundary numbers in nanometers: (387_violet_437- blue_497- green - 567- Yellow 587-orange-647-red- 774).

Answer 1

It is the same thing that either you calculate the wavelength of constructive maxima in both reflection & transmission and the wavelength emitted by the film in the different cases.

Any niven that thickness of the film thickness of the film = d=360nm repractive index of the film - n=1 cair) . utan bir nel 13600m Inals I vilass In the shown geometry the condition of the Conspretive interference for reflection case is 2nd = (mat) for normal incidence 2ndcm me , 1,2- de und & uxlx360nm t = 1940 nm) not eies in the visible region from smission the condition of the maxima is. but for the case of and = mi in d= 2x1 x360 nm = 72onm = 720 nm (red) the transmission speena, we get a reddish Colour So, in the case of emission,