hw21 - PHYS-1200 PHYSICS II SPRING 2006 HOMEWORK SOLUTIONS...

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Unformatted text preview: PHYS-1200 PHYSICS II SPRING 2006 HOMEWORK SOLUTIONS CLASS 21. 36.06, 36.17, 36.65; Q38.04, Q38.06 36.06. a) The minima of single slit diffraction are determined by m a = sin . Using the small angle approximation, we have m D y a m = . Here m y is the distance from the center of central maximum to the m- th minimum. So we get ( 29 m 10 35 . ) m 40 . )( m 10 550 ( 4 4 so , 5 3 9 1 5 1 5-- =- =- =- y y D a y y D a a = 2.5 10-3 m = 2.5 mm b) m 10 5 . 2 m 10 550 3 9 1-- = a 1 = 2.2 10-4 rad = 0.013 36.17. a) R d = = -- 122 122 550 10 50 10 9 3 . . . m m R = 1.34 10-4 rad = 7.69 10-3 deg = 27.7 arc seconds b) Let s be the distance between the headlights, and D the distance from the headlights to the eye. Then, 4- 10 1.34 m .4 1 so , = = = R R s D D s D = 1.0 10 4 m = 10 km 36.65. The first minimum will occur at an angle given by...
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hw21 - PHYS-1200 PHYSICS II SPRING 2006 HOMEWORK SOLUTIONS...

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