# Quiz8b - Exam Quiz 8, Physics 2C Name_ MULTIPLE CHOICE....

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Exam Quiz 8, Physics 2C Name___________________________________ MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. Figure 35.3 Coherent monochromatic light of wavelength 532 nm passes through a pair of thin parallel slits. Fig. 35.3 shows the central portion of the pattern of bright fringes viewed on a screen 0.8 m beyond the slits. 1) For the two slits in Fig. 35.3, the distance between them is closest to: A) 0.086 mm B) 0.141 mm C) 0.017 mm D) 0.135 mm E) 0.124 mm 2) A thin lens makes a 3x magnifying glass (3x simple magnifier). This lens is then used to form an image of an object positioned 11 cm away from the plane of the lens. What is the absolute value of magnification in this latter situation? A) 1.5 B) 2.6 C) 3.1 D) 0.8 3) A plano - convex lens made of a material with a refractive index of 1.65 forms an upright, 4x magnified image of an object placed at a distance of 17 cm from the lens. What is the radius of curvature of the convex side of the lens? A) 10 cm B) 23 cm C) 19 cm D) 15 cm E) 12 cm 4) An object is 55 cm from a concave spherical mirror of radius 65 cm. The absolute value of magnification of the image is closest to: A) 3.21 B) 2.76 C) 1.83 D) 1.44 E) 1.19 5) In a single lens camera, the distance from the lens to the film is varied in order to focus on objects at varying distances. Over what range must a lens of 50 mm focal length vary if the camera is to be able to focus on objects ranging in distance from 4 m down to 0.8 m from the camera? A) 10.1 mm B) 0.9 mm C) 2.7 mm D) 17.2 mm E) 8.3 mm 6) Which of the following is a WRONG statement? A) The image in a concave mirror is of the same size as the object, if the object is located at the center of curvature of the mirror. B) To correct for myopia, eyeglasses with diverging lenses are prescribed, creating virtual, upright, reduced images that are closer to the eyes than the objects themselves C) A concave mirror can make a reduced virtual image D) A lens with a refractive power of 2 diopters has a larger focal length than a lens with a refractive power of 5 diopters. E) In a far - sighted (hyperopic) eye, the eye acts as a lens that is sometimes not strong enough, so close - by objects are imaged to positions behind the retina and appear blurry. A-1

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7) Which of the following is a WRONG statement? A) A lens can produce an upright magnified image on the same side from the lens as the object. B) A lens can produce an upright virtual image on the same side from the lens as the object. C) The magnification of a compound microsope is the sum of magnification of the objective and the eyepiece D) A compund microscope produces an inverted image of an object E) A lens can produce a reduced real image. 8) Which is a WRONG statement?
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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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Quiz8b - Exam Quiz 8, Physics 2C Name_ MULTIPLE CHOICE....

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