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Light hits the surface of water (n = 1.33) at an incident angle of 25.0 degrees with respect to the normal line.What is the angle between the reflected ray and the refracted ray?


A) 18.5 degrees
B) 43.5 degrees
C) 83.5 degrees
D) 96.5 degrees
E) 136.5 degrees

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A beam of light enters a liquid solution from air at an angle of 35 \circ with the normal to its surface.The refracted beam makes an angle of 24 \circ to the normal of the liquid.What is the index of refraction for the liquid?


A) 1.1
B) 1.4
C) 1.5
D) 1.7
E) 2.0

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The the frequency and wavelength of light in an optical fiber are 4.57 *1014 Hz and 437 nm,respectively.What is the critical angle for light in this optical fiber,if the fiber is surrounded by water (n=1.33) ?


A) 57.9 \circ
B) 62.3 \circ
C) 48.8 \circ
D) 41.7 \circ
E) 65.4 \circ

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The speed of light in an optical fiber is 1.83 * 108 m/s What is the index of refraction of the optical fiber?


A) 0.610
B) 1.27
C) 1.52
D) 1.64
E) 5.49

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A collimated laser beam moves upward an angle 20.0 \circ with respect to horizontal and strikes the left side of a ZnSe block.The block has an index of refraction of 2.44 and is surrounded by air with an index of 1.00.The left side of the glass block is vertical (90.0 \circ from horizontal) while the right side of the block slopes upward at an angle of 75.0 \circ from horizontal,i.e.,the block is thicker at the top than at the bottom.Determine the angle with respect to horizontal at which the light travels after it exits the right surface of the block.


A) 58 \circ
B) 73 \circ
C) 0 \circ
D) 2.2 \circ
E) 88 \circ

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A cladded optical fiber for transmitting red light is constructed by placing a cladding material around a round plastic optical fiber.If the index of refraction of the plastic fiber core is 1.6 and the index of refraction of the cladding is 1.2,what is the critical angle for light to transport through the plastic fiber core without loss?


A) 34 \circ
B) 39 \circ
C) 41 \circ
D) 49 \circ
E) 56 \circ

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Standing by the pool filled with water,under what condition will you see the reflection of the scenery on the opposite side through total internal reflection of the image?


A) if you put your eyes level with the water
B) if you observe the pool at an angle of 41.8 degrees
C) under no condition
D) if you observe the pool at an angle of 48.2 degrees

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A green laser beam and a red laser beam are directed onto the surface of a pool of water at an angle of 28 \circ to the normal.Which of the following are true?


A) The beams continue along their original paths.
B) Both beams are bent away from the normal,but the green beam is bent more.
C) Both beams are bent away from the normal,but the red beam is bent more.
D) Both beams are bent towards the normal,but the green beam is bent more.
E) Both beams are bent towards the normal,but the red beam is bent more.

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A ray of light in air with a wavelength of 600 nm is incident on a liquid with an index of refraction of 1.5.The ray of light makes an angle of 45 degrees with the normal when it enters the liquid.What is the wavelength of the ray of light in the liquid?


A) 280 nm
B) 400 nm
C) 600 nm
D) 900 nm
E) 1300 nm

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An optical fiber with an index of refraction of 1.5 is used to transport light of wavelength 400 nm.What is the critical angle for light to transport through this fiber without loss if the fiber is immersed in water?


A) 30 \circ
B) 40 \circ
C) 50 \circ
D) 60 \circ
E) 70 \circ

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If n1 = 1.3 and n2 = 2.2,what is the condition for the angle θ\theta for no light escaping?  If n<sub>1</sub> = 1.3 and n<sub>2</sub> = 2.2,what is the condition for the angle  \theta  for no light escaping?   A)  \theta  > 54<sup> \circ </sup> B)  \theta  < 54<sup> \circ </sup> C)  \theta  > 36<sup> \circ </sup> D)  \theta  < 36<sup> \circ </sup> E) Light escapes for all  \theta .


A) θ\theta > 54 \circ
B) θ\theta < 54 \circ
C) θ\theta > 36 \circ
D) θ\theta < 36 \circ
E) Light escapes for all θ\theta .

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The critical angle for total internal reflection for light entering water (n = 1.33) from oil is 61 \circ .What is the index of refraction of the oil?


A) 1.52
B) 1.39
C) 1.14
D) 1.61

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An object is placed 40 cm from a concave mirror with radius of curvature 50 cm.The image will be


A) real,upright,and enlarged.
B) real,upright,and diminished.
C) real,inverted,and enlarged.
D) real,inverted,and diminished.
E) None are correct.

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Which of the following statements is incorrect?


A) A convex mirror never forms a real image of a real object.
B) The image produced by a convex mirror is always closer to the mirror than it would be in a plane mirror for the same object distance.
C) The virtual image formed by a convex mirror is always enlarged.
D) When an object is placed between a concave mirror and its focal point,the image is virtual.

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A periscope consists of two flat mirrors and is used for viewing objects when an obstacle impedes the direct viewing.Suppose that Curios George is looking through a periscope at the man with the yellow hat whose hat is at do = 2.0 m from the upper mirror and that the two flat mirrors.If the image of the man is di = 2.75 m away from the lower mirror,what is the distance between the two mirrors?


A) 0.75 m
B) 1.15 m
C) 0.50 m
D) 1.5 m
E) 4.75 m

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A single concave spherical mirror is used to create an image of a 6.00-cm tall source.The source is located 23.0 cm to the left of the mirror's center of curvature.The magnitude of the radius of curvature for the mirror is 12.0 cm.Calculate the magnification.


A) +0.52
B) +0.35
C) -0.21
D) -0.35
E) -0.52

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For a concave mirror,when is the object distance equal to the image distance?


A) when the magnification is equal to zero
B) when the focal length is equal to the image distance
C) when the focal length is equal to half the object distance
D) when the focal length is zero

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A concave mirror has a radius of curvature of 30 cm.An object is located 45 cm in front of the mirror.Where is the image formed,and what are its properties?


A) The image is located at 22.5 cm in front of the mirror and is erect.
B) The image is located at 22.5 cm behind the mirror and is erect.
C) The image is located at 22.5 cm in front of the mirror and is inverted.
D) The image is located at 22.5 cm behind the mirror and is inverted.
E) No image is formed in this case.

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Light passing through water (n = 1.33) in an aquarium is incident upon the heavy glass tank wall (n = 1.625) and is partially reflected.At what angle of incidence is the reflected light fully polarized?


A) 55 \circ
B) 39 \circ
C) 51 \circ
D) 35 \circ

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An optical fiber with index of refraction of 1.340 is surrounded by air.What is the critical angle for light to transport through this fiber without loss?


A) 12.56 \circ
B) 67.44 \circ
C) 35.62 \circ
D) 52.23 \circ
E) 48.27 \circ

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