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KABARAKUNIVERSITYUNIVERSITY EXAMINATIONS2011/2012 ACADEMIC YEARFOR THE DEGREE OF BACHELOR OF EDUCATION SCIENCEPHYS 321:PHYSICAL OPTICSDAY:WEDNESDAYDATE: 30/11/2011TIME: 10.00 – 12.00 P.M.STREAM: SESS IV&VINSTRUCTIONS:Answer questionONEand anyTWOother questions.QuestionONEcarries40MARKSwhile all the other questions carry 15 marks each.QUESTION ONE (40 MARKS)(a)
(b)Explain
(c)
(d)Briefly discuss four processes for producing polarized light from unpolarized light.
(e)
(f)A viewing screen is separated from a double-slit source by 1.2 m. The distance betweenthe two slits is 0.030 mm. The second-order bright fringe (m = 2) is 4.5 cm from thecenter line.i.
ii.
(g)Light of wavelength 580 nm is incident on a slit having a width of 0.300 mm. Theviewing screen is 2.00 m from the slit.i.Find the positions of the first dark fringes and the width of the central bright
ii.What if the slit width is increased by an order of magnitude to 3.00 mm? What
1

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Term
Summer
Professor
N/A
Tags
Diffraction, Light, Wavelength, Unpolarized Light

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