Nonreflective coatings on camera lenses reduce the loss of light at the surfaces of multilens systems and prevent internal reflections that might mar the image. Find the minimum thickness of a layer of magnesium fluoride (n = 1.38) on flint glass (n = 1.66) that will cause destructive interference of reflected light of wavelength 5.50 X 102 nm near the middle of the visible spectrum.

Q: a glass microscope lens having an index of reflection 1.45 is to be coated with magnesium fluoride…

A: Determine the wavelength of the light in the film as follows. λfilm=λnfilm=550 nm1.46=376.71 nm

Q: In Newton's rings experiment where light with λ = 420 nm is incident normally, if the radius of the…

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

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

Q: A thin film of glass (n = 1.52) of thickness 0.420 mm is viewed under white light at near normal…

A: The expression to determine the wavelength,

Q: A material having an index of refraction of 1.30 is used as an antireflective coating on a piece of…

A:

Q: A thin layer of a transparent material that has an index of refraction of 1.25 is used as a…

A:

Q: An anti-glare coating is applied to minimize reflection of a certain wavelength from the glass of a…

A: For a anti glare coating, the thickness of the film is in order that destructive interference occurs…

Q: The light from a mercury lamp is incident on a water film of refractive index 1.33 and thicknesst =…

A: We need to find a relation between wavelength, refractive index and thickness for reflection of…

Q: Interference effects are produced at point P on a screen as a result of direct rays from a 5.00 x…

A: Consider a simplified diagram for the above problem.

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

A:

Q: An air gap exists between two glass plates (N a. Determine the minimum width of the air gap if…

A: refractive index of glass = 1.55 Refractive index of air = 1 frequency of orange light = 495 THz…

Q: Light of wavelength 589 nm is used to view an object under a microscope. If the aperture of the…

A: Given values -  Wavelength =λ=589 nm=589×10-9 mAperture =D =0.9 cm =0.9×10-2 m Expression for angle…

Q: A laboratory dish, 20 cm in diameter, is half filled with water. One at a time, 0.50 μL drops of oil…

A: Given: The diameter of the laboratory dish = 20 cm The volume of the oil drop = 0.50 μL

Q: An anti-glare coating is applied to minimize reflection of a certain wavelength from the glass of a…

A: The phenomenon of destructive interference occurs in an anti-glare coating system.  Accordingly, the…

Q: A 130 nm130 nm thick anti‑reflective film, with an index of refraction of 1.37,1.37, is placed on…

A:

Q: Nonreflective coatings on camera lenses reduce the loss of light at the surfaces of multilens…

A:

Q: To keep unwanted light from reflecting from the surface of eyeglasses or other lenses, a thin film…

A: The wavelength of the film can be obtained as

Q: A helium-neon laser emits light that has a wavelength of 632.8 nm. The circular aperture through…

A: Write the given values with the suitable variables. λ=632.8 nm=632.8×10-9 md=0.2 cm=0.2×10-2 ms=20…

Q: We wish to coat flat glass (n = 1.50) with a transparent material (n= 1.25) so that reflection of…

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Q: A camera lens with index of refraction greater than 1.30 is coated with a thin transparent film of…

A: The camera lens has index of refraction greater than 1.30. The reflected light from upper and lower…

Q: A thin film of glass (n 1.52) of thickness 0.420 um is viewed under white light at near normal…

A: The constructive interference in thin films is given by

Q: A lens appears greenish-yellow ( λ= 570 nm is strongest) when white light reflects from it. What…

A: wavelength (λ) reflected most strongly = 570 nm refractive index of coating (n) = 1.25refractive…

Q: On the soap film (n=1,3), which is in the air, a normal beam of white light rays falls. At what is…

A: Solution: given that n = 1.3 wavelength = 0.65 microns

Q: A Fabry-Perot interferometer is used to study a wavelength doublet with A2-d1 = 0.00428 nm at a…

A: Interference is the phenomenon in which two light rays interfere in order to form an interference…

Q: A thin film with an index of refraction of 1.35 is applied to an automobile windshield (with air…

A:

Q: A technician places a fluid substance, with a refractive index of 1.75, between two horizontal panes…

A: Answer Given n= refractive index =1.75 m= order = 1 λ=wavelength = 550nm We have the formula 2nt =…

Q: Your seatmate's glasses appear greenish (500 nm) when white light reflects from it. What is the…

A: wavelength = 500 nmrefractive index of coating = 64 = 1.5refractive index of glass = 1.25

Q: White light (consisting of wavelengths from 400 nm to 700 nm) is normally incident on a grating.…

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Q: The lens of a camera has a thin film coating designed to enhance the ability of the lens to absorb…

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Q: In a Michelson interferometer is set for the white straight fringes. When a mica sheet of thickness…

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Q: A disabled tanker leaks kerosene (n-1.20) into the Persian Gulf, creating a large slick on top of…

A: Givenrefrative index of kerosen nk = 1.2refractive index of water nw = 1.33thick ness of kerosen…

Q: The lens of a camera has a thin film coating designed to enhance the ability of the lens to absorb…

A:

Q: Nonreflective coatings on camera lenses reduce the loss of light at the surfaces of multilens…

A:

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

A: The expression for the required minimum thickness of the liquid layer is,

Q: An air gap exists between two glass plates (n = 1.55). a. Determine the minimum width of the air gap…

A: Given : Refractive index of glass, n2 = 1.55 Refractive index of air, n1 = 1 Frequency of orange…

Diffraction of light

In physics, the term diffraction is defined as the bending of light around the corners of the obstacle. As a light ray passes by an aperture, it bends around the edges or through slits, it spreads out through a narrow opening. The diffracted light will produce fringes of bright and dark or colored bands which are labeled as a diffraction pattern.