Laser vision correction often uses an excimer laser that produces 193-nm electromagnetic radiation. This wavelength is extremely strongly absorbed by the cornea and ablates it in a manner that reshapes the cornea to correct vision defects. Explain how the strong absorption helps concentrate the energy in a thin layer and thus give greater accuracy in shaping the cornea. Also explain how this strong absorption limits damage to the lens and retina of the eye.

Q: When light with a wavelength of 198 nm strikes the surface of tin metal. What is the photon energy…

A: Given, Wavelength is 198 nm Wavelength is 198 x 10-9 m Photon energy  is E = hc/ λ

Q: What is one characteristic of a light beam producedby a monochromatic laser?1. It consists of…

A: Characteristics of a laser light are: Coherent Monochromatic Directionality

Q: In a cavity the total energy is u = a.V.T^4, where a is independent of V and T. Show that: F =…

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Q: A green LED laser with power P = 5 mW, emits monochromatic radiation with wavelength λλ = 520 nm.…

A: Here given a green LED laser emits a radiation 520 nm. The radiation is monochromatic. We have to…

Q: 3. EM radiation Consider EM waves in a 3D cavity of volume V at equilibrium with temperature T. As…

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Q: b. In optical fiber communication, why wavelengths ~ 1310 nm and 1550 nm are often preferred? c.…

A: Disclaimer: “Since you have asked multiple question, we will solve the first question for you. If…

Q: The atoms in a crystal lie in planes separated by a few tenths of a nanometer. Can a crystal be used…

A: According to the Bragg’s law As sinθ less than or equal to one, the above equation becomes,

Q: 6. Your rich uncle has just given you a very dangerous chemical laser that generates a…

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Q: Ana holds a red laser, emitting at 632.8 nm, pointed toward Braden. Initially both are at rest. a)…

A: When an object is moving towards or away from another object, there is change in wavelength of the…

Q: Problem 5: The wavelength range of visible light is usually taken to be from 400 to 700 nm,…

A: The wavelength range of visible light is usually taken to be from 400 to 700 nmThis range is usually…

Q: An argon-ion laser produces a cylindrical beam of light whose average power is 1.02 W. How much…

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Q: We have seen how light can be modeled as a particle and as a wave. Why is light sometime…

A: Particle wave duality means that when a particle is moving with a speed, then it emits a wave. This…

Q: Find the energy of the following. Express your answers in units of electron volts, noting that 1 eV…

A: (a) Frequency of photon is (b) Wavelength is Note:Planck's constant is Speed of light is Find:Energy…

Q: A UV laser (193 nm) vision correction surgery makes a spot and evaporates a layer of cornea. The…

A: Heat absorbed = 4×10-7 kJ initial temperature = 30 degree C final temperature = 100 degree C

Q: 15. How many photons are emitted by a 5.00 mW laser in 10.0 s if the photons have a wavelength of…

A: Given:-  16)  The object distance u = -35 cm  The focal length of the diverging lens f = -20 cm…

Q: An argon-ion laser produces a cylindrical beam of light whose average power is 0.642 W. How much…

A: Given that, Average power  P = 0.642 W Length  L = 2.16 m To find the  Energy contained in the beam…

Q: At what speed must a human weighing 150.0 lb be traveling in order to have a wavelength at 650 nm?

A: When a body moves with some velocity then it can also behave a wave. And also shows wave-like…

Q: Certain spherical metallic nanoparticles are dispersed in ethanol, whose refractive index at room…

A: Given: The refractive index of ethanol at room temperature is 1.36. At room temperature, the…

Q: The characteristic red color of blood is due to the very strong absorption of light at a wavelength…

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Q: In a krypton laser, find the energy difference between the two levels involved in the production of…

A: Given data:Need to determine the energy difference between two levels involved in the production of…

Q: 2. A light source has energy distributed in the range of the wavelength from λ = 600 to 600.018 nm…

A: Given: ∆λ=6×10-4nm,  λ=600-600.018nm (a) The maximum separation of the FP etalon is given by :…

Q: High-power lasers are used to compress a plasma (a gas of charged particles) by radiation pressure.…

A: The plasma completely reflects all the energy incident on it, so the radiation pressure is given by…

Q: Find the energy of the following. Express your answers in unit (a) a photon having a frequency of…

A: Given1eV=1.6×10-19 J

Q: calculate the Quality factor Q for a He-Ne laser that contain front mirror with 95% Reflexivity and…

A: To determine: The emission line of wavelength 632.8 nm

Q: X-rays of wavelength 0.110 nm diffract from a particular crystal; the first order diffraction occurs…

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Q: Question A1 A sodium laser emits a light beam of wavelength 589 nm in air, with a beam diameter of 3…

A: thank you

Q: Calculate the average kinetic energy of ejected electrons in units of kJ / mol when a light with a…

A: The electron’s kinetic energy can be determined as, Here, h, c, λ, and ϕ represent the Plank’s…

Q: A mid-infrared CO₂ laser emitting 10.6 um light is based on the cavity below. (a) Find the location…

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Q: Two motorcycles are located 10.00 km away from a circular radar antenna (diameter of 1.90 m and…

A: Diameter (D) = 1.90 m frequency (f) = 16 GHz c = 3×108 msdistance of motorcycles from antenna (L) =…

Q: An absorption spectrum is obtained by: a.) the same method used to measure transmission. b.)…

A: In absorption spectra,we want to know that what kind of photons can be absorbed by the atom.

Q: It has been suggested that solar powered space ships could get a boost from a laser either on Earth…

A: Wavelength of light, λ=446 nm = 446×10-9 m Diameter of beam, D=0.1 m   We have to determine angular…

Q: Follow up questions: Sunburn (and skin cancer) is caused by ultraviolet light waves having a…

A: Frequency of Ultraviolet ray=1.02×1016 Hz Frequency of Electromagnetic waves =1.43 GHz Frequency of…

Q: Q2. An incident unpolarized light wave of E. is passing an optical system consisting of two beam…

A: An unpolarized light wave of intensity E0 is passed through x-axis polarizer or beam splitter of…

Q: B- What are the wavelengths that Ti-Sapphire lasers provide? Why this type of materials provides so…

A: A Ti-Sapphire laser usually provides wavelengths ranging between  514 to 532 nm.

Q: How much energy is carried by light with a wavelength of λ = 509 nm? Express your answer in eV…

A: Given data:  Wavelength (λ) = 509 nm = 509×10-9 m Required: The energy of light in eV

Q: |In a photoelectric effect experiment, the frequency of photons bombarding the surface is increased…

A: Given,  Threshold frequency (vth)= 6×1014 Hz

Q: The maximum distance between Jupiter and Earth is about 968 million km.  How long will a photon of…

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Nature of light

Light is transverse and electromagnetic radiation that exhibits the properties of a wave as well as a particle. For this reason, light is said to have a “dual nature.”