Problemset9_Solutions

Problemset9_Solutions - What is the diameter of the area of...

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P114 PROBLEM SET 9 Spring 2007 Homework to be handed in by 1700 hours on 3 April 2007 . [1] Light of wavelength 550 nm is incident on a long, narrow slit. Find the angle of the f rst di f raction minimum if the width of the slit is: a) 1mm b) 0.1mm c) 0.01mm [2] A wedge-shaped f lm of air is made by placing a small slip of paper between the edges of two F at glass plates at one end of these plates, while the glass plates touch at the other end. Light of wavelength 650 nm is incident normally on the glass plates, the interference bands are observed by re F ection. a) Is the f rst band near the point of contact of the glass plates dark or light? Why? b) If there are f ve dark bands per centimeter, what is the angle of the wedge? [3] The headlights of on a small car are separated by 115 cm. At what maximum distance could you resolve them if the diameter of the pupil of your eye is 5 mm and the wavelength of light is assumed to be 550 nm? [4

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Unformatted text preview: What is the diameter of the area of the water surface through which she can see the sky. Assume that the refractive index of water is 1.33. [5] The index of refraction for silicate F int glass is 1.66 for light with a wavelength, in air, of 400 nm and 1.61 for light with a wavelength, in air, of 700 nm. Find the angles of refraction for light of these wavelengths when incident on this glass at an angle of 45 . [6] Your car has a rear view mirror that is convex with a radius of curvature of 5 m. A car is approaching you from the rear. Calculate the demagni f cation of the image of the approaching car as seen by you when it is 45 m behind the mirror. If the approaching car is coming towards you at 20 mph, how fast does it appear to be approaching you as seen in your rear view mirror. 1...
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This note was uploaded on 04/07/2008 for the course PHY 113 taught by Professor Jordan during the Spring '08 term at Rochester.

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Problemset9_Solutions - What is the diameter of the area of...

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