A thin film with index of refraction ny separates two materials, each of which has an index of refraction less than nf. A monochromatic beam of light is incident normally on the film. If the light has wavelength A within the film, maximum constructive interference between the incident beam and the reflected beam occurs for which of the following film thicknesses? I. 3A II. A III. X/2 (1) I, II, and III (2) III only (3) II only (4) I only thin film |light (5) I and II only n₁ < n₁ ne n₂< n {
A thin film with index of refraction ny separates two materials, each of which has an index of refraction less than nf. A monochromatic beam of light is incident normally on the film. If the light has wavelength A within the film, maximum constructive interference between the incident beam and the reflected beam occurs for which of the following film thicknesses? I. 3A II. A III. X/2 (1) I, II, and III (2) III only (3) II only (4) I only thin film |light (5) I and II only n₁ < n₁ ne n₂< n {
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
Transcribed Image Text:A thin film with index of refraction nf separates two materials, each of which has an
index of refraction less than nf. A monochromatic beam of light is incident normally
on the film. If the light has wavelength A within the film, maximum constructive
interference between the incident beam and the reflected beam occurs for which of
the following film thicknesses?
I. 3A
II. A
III. X/2
(1) I, II, and III
(2) III only
(3) II only
(4) I only
thin film
light
(5) I and II only
n₁ <nf
n₂ < n₁
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