If the path-length difference between two identical and coherent beams is two wavelengths when they arrive on a screen, will they produce a dark or a bright spot?

Q: Light of wavelength 588.5 nm illuminates a slit of width 0.72 mm. (a) At what distance from the slit…

A: Wavelength of light λ=588.5 nm Slit width d=0.72 mm Distance of first minima from the central maxima…

Q: In a certain crystal the spacing between crystal planes is 0.165 nm. (a) If you shine a beam of x…

A: n=Order=1d=Distance between crystal planes=0.124 nmλ=Wavelength=0.165 nmθ=Angle between beam and…

Q: Monochromatic X-rays are incident on a crystal. The first-order Bragg peak is observed when the…

A: As per Braggs law when an x-ray hits a crystal surface at an angle it will reflect back at the same…

Q: Early investigators (including Thomas Young) measured the thickness of wool fibers using…

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Q: An EM wave with wavelength 6.50E-7 m passes through a thin slit and form a diffraction pattern on a…

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Q: One sometimes sees rows of evenly spaced radio antenna towers. A student remarked that these act…

A: Introduction: Various optical components have periodic structures in optics; the most common are…

Q: The distance between two consecutive bright bands in a biprison experiment is 0.32 mm when ued light…

A: We need to compute-Change in bandwidth (XR-XB)=?Given that-XR=0.32 mm=0.32×10-3 mλR=6400 A0λB=4800…

Q: A double-slit arrangement produces interference fringes for sodium light (l =589 nm) that have an…

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Q: Given that a ruby laser operating at 694.3 nm has a frequency bandwidth of 50 MHz, what is the…

A: Given that,Wavelength of Ruby laser beam , λ0=694.3 nm=694.3×10-9 nmFrequency bandwidth ∆v=50 MHzWe…

Q: An EM wave with wavelength 6.50E-7 m passes through a thin slit and form a diffraction pattern on a…

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Q: Liz observes that an x-ray beam of wavelength 7.2 × 10-10 m causes first order constructive…

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Q: An X-ray beam of wavelength 2.3 × 10-10 m makes an angle of 35° with a set of planes in a crystal…

A: Given An X-ray beam of wavelength striking  a set of planes in a crystal which results in first…

Q: Consider Aluminum Oxide (Al2O3) is to be deposited as an antireflection coating (ARC) on a-Si solar…

A: Given, refractive index of air no = 1             refractive index of Al2O3 ng = 1.77…

Q: An X-ray beam of wavelength 3.4 × 10-10 m makes an angle of 33° with a set of planes in a crystal…

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Q: Coherent electromagnetic waves with wavelength λ = 500 nm pass through two identical slits. The…

A: Interference occurs when two or more waves are superimposed. Diffraction occurs when light waves…

Q: One sometimes sees rows of evenly spaced radio antenna towers. A student remarked that these act…

A: One sometimes sees rows of evenly spaced radio antenna towers. A student remarked that these act…

Q: Diffraction gratings with 10,000 lines per centimeter are readily available. Suppose you have one,…

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Q: In a double-slit experiment, d 21um and the wavelength of the light is A = 431nm. The intensity of…

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Interference of Light

The word "constructive" signifies addition in interference. Constructive interference occurs when the path of the waves that start from the slit differs by 1 entire wavelength or in the intervals of the same. Hence, the waves that are presented on the screen are in phase (crest to crest/trough to trough). The waves interfering constructively forms bright fringes on the screen.