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# Quiz8 - Exam Quiz 8 Physics 2C Name MULTIPLE CHOICE Choose...

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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 632.8 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 1.40 m beyond the slits. 1) For the two slits in Fig. 35.3, the distance between them is closest to: A) 0.633 mm B) 0.0703 mm C) 0.141 mm D) 0.281 mm E) 0.562 mm 2) A thin lens makes a 5x magnifying glass (5x simple magnifier). This lens is then used to form an image of an object positioned 7 cm away from the plane of the lens. What is the absolute value of magnification in this latter situation? A) 3.5 B) 1.4 C) 2.5 D) 5.0 3) A plano - convex lens made of a material with a refractive index of 1.55 forms an upright, 3x magnified image of an object placed at a distance of 22 cm from the lens. What is the radius of curvature of the convex side of the lens? 4) An object is 45 cm from a concave spherical mirror of radius 55 cm. The absolute value of magnification of the image is closest to: 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 35 mm focal length vary if the camera is to be able to focus on objects ranging in distance from 3 m down to 1.2 m from the camera? A) 1.1 mm B) 0.2 mm C) 0.6 mm D) 0.4 mm E) 1.4 mm A-1

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6) Which of the following is a WRONG statement? 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? A) You do not see interference effects between the front and the back of your eyeglasses, because the distance between the surfaces of a lense in the eyeglasses is much greater than the coherence length of the day light.
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Quiz8 - Exam Quiz 8 Physics 2C Name MULTIPLE CHOICE Choose...

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