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quiz8a

# quiz8a - Exam 8A Name MULTIPLE CHOICE Choose the one...

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Exam 8A Name___________________________________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) A double slit system is used to measure the wavelength of light. The system has slit spacing d=15 micron and slit-to-screen distance L=2.2m. If the m=1 maximum in the interference pattern occurs 7.1cm from the screen center, what is the wavelength of the light? A) 375nm B) 400nm C) 425nm D) 450nm E) 475nm 1) 2) Blue light of a given wavelength passes through a single slit of width d and forms a diffraction pattern on a screen. If the blue light is replaced by red light with twice the wavelength, the original diffraction pattern can be reproduced if the slit width is changed to: A) d/4 B) d/2 C) 4d D) 2d E) no change needed 2) 3) In a 7-slit system, how many minima lie between the zeroth-oder and first-order maxima? A) 1 B) 4 C) 5 D) 6 E) 7 3)

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