123Cex2verCsol

# 123Cex2verCsol - Name _Student ID _ Score_ last first I....

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Name ___________________________________ Student ID ____________ Score_______ last first Physics 123C, Spring 09, Version C Exam 2, page 1 θ 2 θ in out θ 2 θ I. Unpolarized light of intensity 43 . 0 W/m 2 passes through three ideal polarizers whose transmission axes are each rotated by a common angle θ with respect to the previous one, as shown. 1. (4 pts) Which choice best represents the direction along which the electric field vector oscillates in the outgoing light? A. B. C. D. E. None of these is correct. 2. (5 pts) If the intensity of outgoing light is 14 . 5 W/m 2 , which choice best represents the angle θ ? 33 . 5 ° 22 . 5 ° 40 . 4 ° 28 . 0 ° 25 . 0 ° A B C D E II. A diverging lens has magnitude of focal length |f| = 10 cm. A bright object is placed 22 cm to the left of this lens, as shown. Each grid square is 2 cm × 2 cm 3. (4 pts) Which choice best represents the image distance produced by this lens? +18 cm -18 cm -6 . 9 cm -7 . 2 cm +6 . 9 cm A B C D E 90 ° 2 θ

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Name ___________________________________ Student ID ____________ Score_______ last first Physics 123C, Spring 09, Version C Exam 2, page 2 II. Continued. The figure is reproduced here: Each grid square is 2 cm × 2 cm 4. (5 pts) Which choice best represents a correct ray diagram showing three principal rays following correct paths (as you might draw for a ray diagram)? A. B. C. D. E. None of these has three correct rays.
Name ___________________________________ Student ID ____________ Score_______ last first Physics 123C, Spring 09, Version C Exam 2, page 3 × × x II. (Cont.) A converging lens has magnitude of focal length |f| = 20 . 0 cm. A bright object is placed 8 . 00 cm to the left of this lens, as shown. When viewed

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## This note was uploaded on 06/07/2009 for the course PHYS 123 taught by Professor Boynton during the Spring '09 term at University of Washington.

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123Cex2verCsol - Name _Student ID _ Score_ last first I....

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