A thin film of ethyl alcohol (n = 1.36) lies on top of water (n = 1.33).  When sunlight is incident at right angles to this film, the only colors that are absent from the reflected light are orange (λ = 600 nm) and blue (λ = 450 nm).  Find the thickness of the ethyl alcohol film

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A: The condition for constructive interference in the reflected light under normal incidence is:

Q: ng n1 n2 r4 i -L-

A: Given: Refraction index n1 = 1.59 Refraction index n2 = 1.52 Refraction index n3 = 1.53 Thickness of…

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A: The distance of nth dark fringe in is given by, dsin(Θ)=2n-12λD               (1)

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A:

Q: ?glass=1.52, has a 119 nm thick antireflective film coating one side, ?film=1.35. White light,…

A: Givennglass=1.52Thickness, d=119 nm=119×10-9 mnfilm=1.35

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A: Given:            np=1.6ng= 1.4λ= 650 nm   Minimum thickness of coating formula is given as:…

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Q: A 500nm layer of oil floats on a puddle of water. Reflected sunlight is observed from directly…

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Q: A thin layer of glass (n = 1.50) floats on a transparent liquid (n = 1.34). The glass is illuminated…

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Q: An oil film with refractive index 1.48 and thickness 290 nm is floating on water and illuminated…

A: Given, Refractive index, k = 1.48 Thickness, t = 290 nm = 290 x 10-9 m

Q: A camera lens (n= 1.50) is coated with a thin film of magnesium fluoride (n = 1.38) of thickness…

A:

Q: Kerosene (n = 1.20) was spilled on the water in the ocean (n = 1.30) creating a large thin layer.…

A: a) Formula for constructive interference of light waves reflected by a thin film is given by, 2t =…

Q: A thin layer of liquid methylene iodide (n = 1.89) issandwiched between two flat, parallel plates of…

A:

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A: thewavelengthoflightisapproximately5.20×10−65.20×10−6meters.Approach to solving the question: we can…

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Q: How thick is the oil film

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Q: m 11:  A soap bubble film with index of refraction n = 1.33 is illuminated perpendicularly with a…

A: Given: The refractive index of the film is 1.33. The wavelength of the light is 550 nm.

Q: A thin film of oil (n 1.46) is floating on a water surface (n = 1.33) and is illuminated from above…

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Q: A film of soapy water (n=1.33) on top of a plastic cutting board has a thickness of 233 nm. What…

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Q: A soap/water film on a wire loop (this means a thin layer of water with air on either side, and nair…

A: As nair < noil <nwater , there will be phase shift due to reflection at boundary, which will…

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Q: Monochromatic light of variable wavelength is incident normally on a thin sheet of plastic film in…

A: Conversion unit 1 nm=10-9m Given: λ1 ref =491.4 nm=491.4×10-9m λ2ref=688 nm=688×10-9 m n1=1n2=1.58…

Q: A thin layer of liquid methylene iodide (n = 1.756) is sandwiched between two flat, parallel plates…

A: refractive index of methylene iodide n1=1.756 refractive index of glass n=1.5 wavelength λ=682…

Q: An oil slick on water is 144 nm thick and illuminated by light of all wavelengths incident at a 30°…

A: Answer:  Given, Thickness of oil slick is, d=144nm Angle of incidence = 30° Refractive index of oil…

Q: A thin film of oil (no = 1.5) with varying thickness floats on water (n = 1.33). When it is…

A: (a)At point A on the figure 24.60 the thickness of layer of oil is very small and is negligible as…

Q: A tempered glass is placed atop a phone screen (n=1.52). Green light (540 nm) is incident from air…

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Q: A glass lens (n = 1.52) is coated with a thin film of transparent substance that has an index of…

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Q: Red light having a wavelength of 690 nm (in air) is vertically incident on a thin film of oil that…

A: Given :     Wavelength of light, λ = 690 nm     Refractive index of the oil film, μ=1.19…

Q: 9)

A: Refer explanationExplanation:

Q: ormally incident light with

A: The refractive index of methylene iodide                                                   The…

Q: Three experiments involving reflection fr thickness and A denotes the wavelength oz constructive…

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Q: A thin film of glass (n = 1.66) of thickness 0.363 ?m is viewed under white light at near-normal…

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Q: An oil slick on water is 144 nm thick and illuminated by light of all wavelengths incident at a 30°…

A: In this case, an oil slick has some thickness and illuminated by the light of all wavelengths at…

Q: When white light illuminates an oil film on water and the reflected light is viewed perpendicular to…

A:

Q: The light reflected from a soap bubble (n = 1.38) appears a brightness maximum at 1 = 580 nm. What…

A: Refractive index n = 1.38  Wavelength of light λ = 580 nm

Q: White light is incident at near normal on a thin film of thickness 542 nm and index of refraction n…

A:

Q: A thin film of oil (n = 1.41) of thickness 422 nm with air on both sides is illuminated with white…

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Q: Interference fringes are produced using Lloyd’s mirror and a source S of wavelength λ = 606 nm as…

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Q: Two light waves are initially in-phase and have the same wavelength of 638 nm in air. They enter and…

A: Given Wavelength of wave= 683nm Refractive index of glass n1=1.67 n2=1.61 Phase difference=3π2