A thin glass plate (n=1.56) rests on a small pool of water (n=1.333). Light is incident from air onto the surface of the glass plate. Red light of wavelength 680nm (in air) is observed to be most strongly reflected from the glass. What are the three thinnest possible thicknesses of the glass plate?
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- Two waves of light in air, of wavelength 600.0 nm, are initially in phase. They then travel through plastic layers as shown in the figure below, with L1 = 4.44 µm, L2 = 3.97 µm, n1 = 1.45, and n2 = 1.62. What multiple of A gives their phase difference after they have both emerged from the layers? Give absolute value. L1 Number i 0.906 Units This answer has no unitsA ray of sunlight traveling through water (n=1.32 - 1.34 across the visible spectrum) has an incident angle of 80° when it encounters a transparent aquarium wall with index of refraction n=1.2. There is air with index n=1 on the other side of the wall and the wall surfaces are parallel. Which statement below is true? Select one: a. Light emerges on the other side of the wall traveling parallel to the incident ray. b. Light emerges on the other side of the wall but different colors now travel in different directions. c. Light emerges on the other side of the wall and is now completely polarized. d. The light is completely reflected at the first interface. e. The light enters into the transparent wall bot is completely reflected at the second interface.You are standing in air and are looking at a flat piece of glass (n = 1.52) on which there is a layer of transparent plastic (n = 1.61). Light whose wavelength is 693 nm in vacuum is incident nearly perpendicularly on the coated glass and reflects into your eyes. The layer of plastic looks dark. Find the two smallest possible non-zero values for the thickness of the layer.
- The wavelength of red helium-neon laser light in air is 632.8 nm. (a) What is its frequency? Hz (b) What is its wavelength in glass that has an index of refraction of 1.62? nm (c) What is its speed in the glass? Mm/sThe wavelength of red helium-neon laser light in air is 632.8 nm. (a) What is its frequency? Hz (b) What is its wavelength in glass that has an index of refraction of 1.61? nm (c) What is its speed in the glass? Mm/sThere’s a puddle you see in the parking lot at UE. You examine it with a beam of white light. You notice that there’s a thin slick of something (n = 1.25) floating on the puddle (water, n = 1.33). When you shine your flashlight on it, you only see two bright wavelengths in the reflected light, λ = 675 nm and λ = 450 nm, both as measured in air. What is the thickness of the thin film?
- White light is normally incident on an oil film floating on water. If the oil has an index of refraction of n = 1.52 and the thickness t=287 nm, determine the following. (a) wavelength of the light in the visible spectrum (400 nm-700 nm) most strongly reflected nm (b) wavelength of the light in the visible spectrum (400 nm-700 nm) most strongly transmitted nm Additional MaterialsWhite light hits the surface of a thin film (n = 1.6) perpendicularly. There is air on both sides of the membrane. The wavelengths 504 nm and 672 nm are missing from the reflected light. a) What is the minimum thickness of the thin film? b) Which wavelengths are strongly visible in the reflected light?A light ray whose frequency is 7.00 × 1014 Hz in vacuum is incident on glass (n = 1.50). Determine the wavelength of the light after it enters the glass (in nm). (c = 3 x 108 m/s)
- A flat piece of glass is held stationary and horizontal above the highly polished, flat top end of a 9.00-cm-long vertical metal rod that has its lower end rigidly fixed. The thin film of air between the rod and glass is observed to be bright by reflected light when it is illuminated by light of wavelength 515 nm. As the temperature is slowly increased by 25.5°C, the film changes from bright to dark and back to bright 200 times. What is the coefficient of linear expansion of the metal?A thin film of soap with n = 1.40 hanging in the air reflects dominantly red light with λ = 664 nm. Now this film is on a sheet of glass, with n = 1.55. What is the wavelength of the light in air that will now be predominantly reflected?10. A beam of initially unpolarized light of intensity 723 W/m^2 passes through a series of polarizing filters, each one s axis aligned at a 17.9-degree angle with respect to the previous filter s axis. The beam of light emerging from the final filter in the series has an intensity of 220.1 W/m^2. How many polarizing filters did the beam pass through? 3 12 9 6