Quiz4A - Physics 2 C Spring 2009 Quiz4A Nam

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Unformatted text preview: Physics 2 C Spring 2009 Quiz4A Nam e___________________________________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) In order to achieve a high m agnifica tion with a com pound m icroscope you should have an objective lens with a ________ focal length and an eyepiece with a _________ focal length. A) short, short B) long, long C) long, short D) short, long 1) 2) A m yopic girl wears eyeglasses that allow her to have clear distant vision. The power of the lenses of her eyeglasses is ‐ 3.00 diopters. W ithout eyeglasses, the far point of the girl is closest to: A) 0.50 m B) 0.42 m C) 0.25 m D) 0.17 m E) 0.33 m 2) 3) The im age form ed by a conca ve m irror when the object is placed between the m irror and the focal point has the following characteristics: A) real, inverted, enlarged, im age distance is larger than object distance B) virtual, upright, enlarged, im age distance is larger than object distance C) virtual, upright, reduced, im age distance is sm aller than object distance D) real, upright, enlarged, im age distance is larger than object distance E) virtual, inverted, reduced, im age distance is sm aller than object distance 3) 4) You wish to obtain a m agnifica tion of ‐ 2 from a converging lens of focal length f. You m ust A) place a virtual object at a distance 5f /3 from the lens. B) place a real object at a distance 2f /3 from the lens. C) place a virtual object at a distance 2f /3 from the lens. D) place a real object at a distance 3f /2 from the lens. E) place a virtual object at a distance 3f /2 from the lens. 4) 5) The picture of a tree on a 35‐m m color slide is 12 m m high. It is to be projected onto a screen 10.0 m from the slide, and is to appear 650 m m high.What focal length lens is needed? A) 12.5 cm B) 18.2 cm C) 20.3 cm D) 9.8 cm E) 15.7 cm 5) 6) A 4.0‐ cm ‐ tall object is placed 50.0 cm from a diverging lens of focal length 25.0 cm . What is the nature and location of the im age? A) A virtual im age, 1.3 cm tall, 16.7 cm sam e side as the object B) A real im age, 4.0 cm tall, 20 cm other side of the object C) A virtual im age, 4.0 cm tall, 20 cm other side of the object D) A virtual im age, 2.0 cm tall, 10 cm other side of the object E) A real im age, 1.3 cm tall, 16.7 cm sam e side as the object 6) 1 Answer Key Testname: QUIZ 4 1) A 2) E 3) B 4) D 5) B 6) A 2 ...
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This note was uploaded on 12/13/2011 for the course PHYS 2C PHYS 2C taught by Professor Groisman during the Spring '11 term at UCSD.

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