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41) Give three examples of electromagnetic radiation..

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41) Give three examples of electromagnetic radiation..

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42) When light enters a piece of glass from air, its speed...

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42) When light enters a piece of glass from air, its speed...

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43) If diamond has an index of refraction of 2.51, what is the speed through this object?

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43) If diamond has an index of refraction of 2.51, what is the speed through this object?

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Hint: V = C/N

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44) A ray of light in air is incident on a glass boundary at an angle of 40° with the normal. If the index of refraction of the glass is 1.65, what is the angle of refraction in the glass? 

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44) A ray of light in air is incident on a glass boundary at an angle of 40° with the normal. If the index of refraction of the glass is 1.65, what is the angle of refraction in the glass? 

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Hint: N1 * Sin1 = N2 * Sin2

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45) A light ray in air is incident on a glass boundary at an angle of 30° and is refracted in the glass at 20° with the normal. What is the index of refraction of the glass? 

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45) A light ray in air is incident on a glass boundary at an angle of 30° and is refracted in the glass at 20° with the normal. What is the index of refraction of the glass? 

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Hint: N1 * Sin1 = N2 * Sin2

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46) If total internal reflection occurs at a glass to air surface: is there a refraction and reflection angle?

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46) If total internal reflection occurs at a glass to air surface: is there a refraction and reflection angle?

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Hint:

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47) If you stand 0.75 meters in front of a plane mirror, what is the apparent distance between you and your image?

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47) If you stand 0.75 meters in front of a plane mirror, what is the apparent distance between you and your image?

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48) A concave mirror with a focal length of 12 cm creates a real image 30 cm away on its principal axis; the corresponding object is located how far from the mirror? 

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48) A concave mirror with a focal length of 12 cm creates a real image 30 cm away on its principal axis; the corresponding object is located how far from the mirror? 

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Hint: 1/F = 1/Di + 1/Do

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49) What is the focal length of a mirror whose radius of curvature is 22 cm?

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49) What is the focal length of a mirror whose radius of curvature is 22 cm?

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50) A candle was placed 36 cm from a converging lens. The image of the candle was inverted and appeared 20 cm from the lens. What is the focal length of the lens? 

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50) A candle was placed 36 cm from a converging lens. The image of the candle was inverted and appeared 20 cm from the lens. What is the focal length of the lens? 

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Hint: 1/F = 1/Di + 1/Do

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41. X- Rays, Light, Infrared
42. Decreases
43. 11.95 m/s
44. 22.8°
45. N2 = 1.47
46. No refraction angle, only reflection angle.
47. 0.75(2) = 1.5
48. Do = 20
49. 22/2 = 11
50. F = 13