The thinnest film (but not zero) that produces a strong reflection for green light with a wavelength of 500 nm is <u>200 nm.</u>
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The wavelength of mild, λ = 500 nm
= 500 x 10^-9 m
Refractive index of oil, n1 = 1.25
Refractive index of water, n2 = 1.33
The thickness of the movie, d =?
For a sturdy mirrored image, m = 1
Wavelength, λ= 2 n1 d / m
Thickness, d = λ m / 2 n1
= 500 x 10 -9 * 1 / ( 2 * 1.25 )
= two hundred x 10 -nine m
= 2 hundred nm.
Wavelength is the gap between the same factors (adjacent crests) within the adjacent cycles of a waveform signal propagated in space or alongside a wire. In wireless systems, this duration is usually specified in meters (m), centimeters (cm), or millimeters (mm).
Wavelength may be defined as the space between two successive crests or troughs of a wave. it is measured within the route of the wave.
Wavelength is the distance among two adjacent crests or troughs of a waveform signal propagated in space or along a wire. The wavelength of a wave is usually specified in meters (m), centimeters (cm), or millimeters (mm). The wavelength is inversely related to frequency.
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