In order to observe an interference pattern, we must have: A. a monochromatic light source. B. a coherent light source. C. A and B both D. Any light source, a pair of slits and a flat screen.
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- 2. In linear and circular polarization, consider monochromatic plane waves with frequency w propagating along the z axis in a dielectric characterized by permeabilities &, µ. a) Construct all linearly polarized wave and circular polarized wave solutions. Calculate E and B, given that Ex = Bx = 240 b) Consider two linearly polarized waves with E ||x and E ||y, respectively. Under what conditions their superposition is characterized by (i)linear and (ii) circular polarization? Given that Ex = 24010. A ray of light with a wavelength of 480 nm strikes a very thin soap film of thickness 2.00 nm, with air on each side of the film. Which statement is true? a. There will be constructive interference because the path difference is effectively zero, and phase change occurs at only one surface. b. There will be destructive interference because the path difference is effectively zero, and phase change occurs at only one surface. c. There will be constructive interference because the path difference is effectively zero, and phase change occurs at either surface. d. There will be destructive interference because the path difference is effectively zero, and phase change does not occur at either surface.asap pls
- What is the highest order bright fringe that will be observed when green light of wavelength 550 nm is incident on a Young's double slit apparatus with a slit spacing of 11 µm? a. m = 12 b. m = 16 c. m = 18 d. m = 20 e. m = 14A sheet of glass (n=1.50) is coated with a 500 nm-thick layer of oil (n=1.42). A. For what visible wavelengths of light do the reflected waves interfere constructively? The range of wavelength of visible light is from 380 nm to 750 nm. B. For what visible wavelengths of light do the reflected waves interfere destructively? C. What is the color of reflected light? D. What is the color of transmitted light?A thin film of polystyrene n=1.49 coats a piece of glass n=1.55. When illuminated from above, the dominant color of the light reflected to the observer is 473 nanometers wich is blue. What is the minimum thickness of the thin film? A. 317 nm B. 153 nm C. 159 nm D. 305 nm E. 79.4 nm
- In a thin slit Fraunhofer diffraction, if the width of the slit (b) is reduced, what will happen? A. Diffraction angle (0) is reduced. B. Diffraction angle (0) is increased. C. Diffraction angle (0) remains unchanged, D. The maximum irradiance or light intensity (I,) remains unchanged.a. What is the angular separation between the third order fringe and the central fringe?The wavelength limits of human vision are 400 nm to 700 nm. A. Find the minimum frequency of light that human can see underwater? The speed of light in water is 1.33 times less than in the air. B. Find the maximum frequency of light that human can see underwater? The speed of light in water is 1.33 times less than in the air. C.Find the minimum wavelenght of light that human can see underwater? The speed of light in water is 1.33 times less than in the air. D. Find the maximum wavelenght of light that human can see underwater? The speed of light in water is 1.33 times less than in the air. (Item 4)