2009-10-Sem2-Test2

# 2009-10-Sem2-Test2 - Page 1 of 8 NATIONAL UNIVERSITY OF...

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Page 1 of 8 Page 1 of 8 NATIONAL UNIVERSITY OF SINGAPORE PC1222 FUNDAMENTALS OF PHYSICS II TERM TEST 2 (Semester II: AY 2009-10, 16 April) Time Allowed: 1.5 Hours (2:15 pm – 3:45 pm) INSTRUCTIONS TO CANDIDATES 1. This test paper contains TWENTY-FIVE multiple-choice questions and comprises EIGHT printed pages including the cover page. 2. Answer ALL questions on the Optical Reader Form. 3. For each question, select the correct answer A, B, C, D or E by darkening the appropriate circle on the Optical Reader Form. Darken only ONE circle for each answer; darkening more than one circle will invalidate your answer. 4. All questions carry equal marks; There is NO negative marking. 5. ONLY Optical Reader Form should be submitted at the end of the test. 6. This is a CLOSED book test. You are allowed however to bring in ONE help sheet no larger than A4 in size.

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Page 2 of 8 Page 2 of 8 1. You walk directly toward a plane mirror at a speed of 0.30 m/s. Determine the speed of the image relative to yourself . A) 0.15 m/s B) 0.30 m/s C) 0.60 m/s D) 0.90 m/s E) 1.2 m/s 2. A ray of light passes from air into a block of glass with a refractive index of 1.59 as shown in the figure. Note: The drawing is not to scale. What is the value of the distance D ? A) 1.42 cm B) 1.66 cm C) 1.93 cm D) 2.19 cm E) 2.38 cm 3. A ray of light originating in oil ( n = 1.21) is incident at the Brewster angle upon a flat surface of a quartz crystal ( n = 1.458). Determine the angle of incidence for this ray. A) 0.82° B) 1.2° C) 40° D) 50° E) 56°
Page 3 of 8 Page 3 of 8 4. A light ray is traveling in a diamond (n = 2.419). If the ray approaches the diamond- air interface, what is the minimum angle of incidence that will result in all of the light reflected back into the diamond? The index of refraction for air is 1.000. A) 24.42° B) 32.46° C) 54.25° D) 65.58° E) 77.54° 5. The radius of curvature of a spherical convex mirror is 52 cm. What is its focal length? A)

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2009-10-Sem2-Test2 - Page 1 of 8 NATIONAL UNIVERSITY OF...

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