In the laser range-finding experiments, the laser beam fired toward the moon spreads out as it travels because it diffracts through a circular exit as it leaves the laser. In order for the reflected light to be bright enough to detect, the laser spot on the moon must be no more than 1 km in diameter. Staying within this diameter is accomplished by using a special large-diameter laser.If λ = 532 nm, what is the minimum diameter of the circular opening from which the laser beam emerges? The earth-moon distance is 384,000 km.

Q: One way to measure the width of a narrow object is to examine its diffraction pattern. When laser…

A: Given that - Wavelength of laser light Distance between the screen and slits Width of the central…

Q: The minimum angle of resolution of the diffraction patterns of two identical monochromatic point…

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Q: One leg of a Michelson interferometer contains an evacuated cylinder of length L, =0.40m having…

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Q: What is the relationship between the width (W) of the central diffraction maximum formed through a…

A: The relation between the width (W) of central diffraction maximum formed through a circular aperture…

Q: In Young's double-slit experiment, the intensity of light on the observation screen is described by:…

A: Given: The wavelength (λ) of the plane monochromatic light is 650 nm. The distance (d) between the…

Q: Suppose 1.25 Ångstrom X-rays illuminate a large single crystal of an unknown material. If the Bragg…

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Q: A He-Ne gas laser which produces monochromatic light of a known wavelength ? =6.35 ? 10^7 ? is used…

A: Given that, Wavelength λ=6.35×107 m Angle = 220 Number of order m= 1

Q: Light of wavelength 514 nm illuminates a slit of width 0.75 mm.  At what distance from the slit…

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Q: A Young's double-slit experiment is set up so that the screen is positioned 1.43 m from the double…

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Q: A plane light wave 0.691 µm is incident normally on a diaphragm with a circular aperture 3.2 cm in…

A: Wavelength=0.691muo.m Diameter circular aperture=3.2cm Radius=1.6cm

Q: In Youngs double slit experiment the intensities of dark and bright lines are 1 and 4 respectively,…

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Q: Laser light of wavelength 460 nmnm is traveling in air and shines at normal incidence onto the flat…

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Q: In Figure P37.18, let L = 120 cm and d = 0.250 cm. The slits are illuminated with coherent 600-nm…

A: Step 1 The average intensity and the maximum intensity are related as below, Here ϕ is the phase…

Q: A telescope is used to view two stars that are about 9.36 light-years away and emit light with an…

A: Given Separation of two stars(R)=9.36 light-years wavelength(λ)=570mm=570*10-9m diameter of…

Q: One way to measure the width of a narrow object is to examine its diffraction pattern. When laser…

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Q: nt light with a mix of wavelengths 470 nm, 550 nm, and 665 nm onto a diffraction grating with a…

A: Given:- You shine coherent light with a mix of wavelengths 470 nm, 550 nm, and 665 nm onto a…

Q: A beam of monochromatic light is diffracted by a slit of width 0.530 mm. The diffraction pattern…

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Q: The coherence length of an ordinary white light source can be increased if light that passes through…

A: GivenMinimum Wavelength of emerging light, λmin=588 nmCoherence length, L=0.099 mm

Q: Light from a star is spread to cover 1000 slits of grating whose distance from slit to slit is 2…

A: Given: Slit to slit distance (d) = 2 µm. = 2×10-6 m. First order spectrum range = 400 nm (λ1) to 750…

Q: The coherence length of an ordinary white light source can be increased if we place a color filter…

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Q: Suppose you're shining a light through a small slit (width=400 nm). Which will diffract more: a red…

A: the angle of diffraction is directly proportional to the size of the wavelength. Hence red light…

Q: The coherence length of an ordinary white light source can be increased if we place a color filter…

A: The maximum wavelength is 651.6 nm.

Q: 350 nm of light falls on a single slit of width 0.20 mm. What is the angular width of the central…

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Q: The two headlights of a car are separated by 1.8 m. You are an observer equipped with an infra-red…

A: Find the angular separation of the two sources. D=dθθ=dD=1.8 m9000 m=2.0×10-4 rad

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: Q5 Monochromatic light from a distant source is incident on a slit 0.750 mm wide. On a screen 2.00 m…

A: Write the slit diffraction equation. Here, y is the distance of the first minima, m is the order, λ…

Q: If a diffraction grating produces a third-order bright spot for red light (of wavelength 670 nmnm )…

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Q: The human eye can readily detect wavelengths from about 400 nm to 700 nm. If white light illuminates…

A: Given minimum wavelength of human =400nm  Maximum wavelength of humen =700nm  Number of lines N=870…

Q: In an experiment, green light with wavelength 530 nm, sent through a pair of slits 28.6 um apart,…

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Q: One way to measure the width of a narrow object is to examine its diffraction pattern. When laser…

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Q: One leg of a Michelson interferometer contains an evacuated cylinder of length L, =0.30m having…

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Q: In a double slit experiment, it is observed that the distance between adjacent maxima on a remote…

A: We know that distance is given by  Y=λdD Where lambda is wavelength and D is distance from slit to…

Q: Light of wavelength 630 nm is incident on a long, narrow slit. a)Determine the angular deflection of…

A: a) The expression for the angular deflection of a dark band is,

Q: You are conducting a single-slit diffraction experiment with light of wavelength l. What appears, on…

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Q: Monochromatic laser light flows through a small slit in a thin aluminum plate and generates a…

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Q: A beam of monochromatic light with a wavelength of 500 nm is directed through an absorber having 5…

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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: Light of wavelength 520 nm illuminates a slit of width 0.45 mm. (a) At what distance from the slit…

A: Wavelength of the light λ = 520 nm=520×10-9 m Slit width d = 0.45 mm=0.45×10-3m The distance of the…

Q: The coherence length of an ordinary white light source can be increased if we place a color filter…

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Q: Although we have discussed single-slit diffraction only for a slit, a similar result holds when…

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Q: A vehicle with headlights separated by 2.00 m approaches an observer holding an infrared detector…

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Q: Light of wavelength λ = 580 nm is incident upon two thin slits that are separated by a distance d =…

A: Wavelength of light (λ) = 580 nm slit distance (d) = 25μm Screen distance (L) = 1.5 m y = 5.5 mm…

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.