Two long plates of glass (n=1.9) are arranged with a human hair holding the ends apart at one end. This leaves a very thin wedge of air between them. We shin red light perpendicular to the surface of the top plate. (Wavelength= 700 nm) This makes bands of interference parallel to the ends of the arrangement, which are called "fringes." a) Find the thickness of the air where the 7th dark fringe occurs. b) Is there a light fringe or dark fringe where the two ends touch together?

Q: Light is sent through a single slit of width w = 0.68 mm. On a screen, which is L = 1.1 m from the…

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Q: Because the coating is expensive, you want to use a layer that has the minimum thickness possible,…

A: We have to apply the condition for destructive interference.

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Q: A thin film of oil is on a puddle of water. Light of wavelength 635nm hits the thin film. What…

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A: We have to use condition for destructive interference.

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Q: A thin film of oil is on a diamond. What is the thinnest that the oil can be to have destructive…

A: Given,The wavelength of light in air, λ=730×10-9 mRefractive index of air, nair = 1Refractive index…

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A: Given Eyeglass lenses of refractive index 1.625 glare reducing film of refractive index 1.432 To…

Q: measured carefully on a screen 1.20 m away from the double slit, and the center of the 20th fringe…

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Q: A nonreflective coating (n = 1.41) covers the glass (n = 1.52) of a camera lens. Assuming that the…

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Q: A cup of water (n = 1.33) sitting on a table outside in the sunlight is filled to the top. The sun…

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Q: A thin film of toluene (n = 1.49) floats on water. Find the mini- mum film thickness if the most…

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Q: A thin film of cooking oil (n = 1.44) is spread on a puddle of water (n = 1.33). What is the minimum…

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Q: Light of wavelength 523 ± 11 nm passes through an interference (diffraction) grating that has 350 +…

A: In this case, the pattern will consist of multiple bright fringes, with the central maximum being…

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Q: 6. Go mmh Two parallel slits are illuminated by light composed of two wavelengths. One wavelength is…

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Q: A single slit is illuminated by a monochromatic (single colour) light source. A screne is placed 5.0…

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Q: Light with a wavelength of 495 nm strikes a single slit that is 0.6 mm wide. The diffraction pattern…

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Q: A single slit is illuminated by a monochromatic (single colour) light source. A screne is placed 5.0…

A: in this question we use equation of distance between two fringes.

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Q: 1. a. If a piece of glass (n = 1.5) is coated with a transparent plastic (n = 2.0), will there be a…

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Q: Two rectangular plates are placed on top of one another on a table, but there is a single hair…

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Q: A film of oil on water will appear dark when it is very thin, because the path length difference…

A: Here's the detailed explanation:To determine the maximum thickness of an oil film that appears dark…

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Q: In a double-slit interference experiment, the wavelength is 1 = 662 nm, the slit separation is d =…

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Q: What is the minimum thickness of a soap bubble film with refractive index 1.38 that results in a…

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Q: A sheet of glass of refractive index 1.50 is coated with a 400 nm-thick layer of oil of index 1.36.…

A: Given, Refractive index of glass sheet nglass = 1.50  Thickness of oil layer t = 400 nm Refractive…

Q: a) An interference pattern is observed when two or more waves of light overlap at given point…

A: (a) true  Two necessary condition for stable and clear interference pattern are coherent and…

Q: Light of wavelength 530 nm passes through a slit of width 0.220 mm. (a) The width of the central…

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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.