A thin film of refractive index 1.5 and thickness `4 xx 10^(-5)` cm is illuminated by light normal to the surface. What wavelength within the visible spectrum will be intensified in the reflected beam?

A thin film is 4,000 overset @A thick. White light from an extended source falls normally on the film.If the refractive index of film is 1.5,what wavelength within the visible spectrum will be intenisifed in the reflected beam ,if visible range of the spectrum is 3,900 overset @A to 7,800 overset @A ?

A glass plate (n=1.53) that is 0.485 mu m thick and surrounded by air is illuminated by a beam of white light normal to the plate. (a) What wavelengths (in air) within the limits of the visible spectrum (lambda = 400 "to" 700 nm) are intensified in the reflected beam ? (b) What wavelengths within the visible spectrum are intensified in the transmitted light?

A glass plate (n=1.53) that is 0.485 mu m thick and surrounded by air is illuminated by a beam of white light normal to the plate. (a) What wavelengths (in air) within the limits of the visible spectrum (lambda = 400 "to" 700 nm) are intensified in the reflected beam ? (b) What wavelengths within the visible spectrum are intensified in the transmitted light?

A lens ( mu=1.5 ) is coated with a thin film of refractive index 1.2 order to reduce the reflected form its surface at lambda=4800Å .Find the maximum thickness of the film which will minimized the intensity of the reflected light .(Assume near normal incidence)

A thin film having refractive index mu" = 1.5" has air on both sides. It is illuminated by white light falling normally on it. Analysis of the reflected light shows that the wavelengths 450 nm and 540 nm are the only missing wavelengths in the visible portion of the spectrum. Assume that visible range is 400 nm to 780 nm. (a) Find thickness of the film. (b) Which wavelengths are brightest in the interference pattern of the reflected light?

A 4.0 xx 10^(2) nm thick film of kerosene (n = 1.2) is floating on water. White light is normally incident on the film. What is the visible wavelength in air that has a maximum intensity after the light is reflected? Note: The visible wavelength range is 380 nm to 750 nm.

Light of wavelength 6,000 overset @A is incident on a thin film of refractive index 1.5 ,such that angle of refraction into the film in 60^@ .Calculate the smallest thickness of the film,which will make it appear dark by reflection.