1) What is the speed of light in a glass(n=1.5)? 2) A man 1.80 m tall stands in front of a vertical plane mirror. What is the minimum height of the mirror, if he is to see his whole body? Assume his eyes are 10 cm below the top of his head.
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- A ray of light travels through air until it strikes the interface between the air and another medium. The incident ray makes an angle of ?1 = 34.0° with the normal, as shown in the figure below. Upon passage into the second medium, the ray is refracted, emerging from the interface at an angle ?2 with respect to the normal. A light ray in air is moving down and to the right and is incident on a second medium. It makes an angle ?1 with the vertical. Inside the vertical, it continues to move down and to the right but at a steeper slope than the incident ray. It makes an angle ?2 with the vertical. (a) Suppose that the second medium is flint glass. What is the angle of refraction, ?2 (in degrees)? (Enter your answer to at least one decimal place.) ° (b) Suppose that the second medium is fused quartz. What is the angle of refraction, ?2, in this case (in degrees)? (Enter your answer to at least one decimal place.) ° (c) Finally, suppose that the second medium is ethyl…1) What is the speed of light in a glass(n=1.5)? 2) A man 1.80 m tall stands in front of a vertical plane mirror. What is the minimum height of the mirror, if he is to see his whole body? Assume his eyes are 10 cm below the top of his head.Light is incident on water(n=1.33) from air (n=1.001) at an angle of 34°. What is the angle of refraction?
- The index of refraction of water is 1.33 and the index of refraction of crown glass is 1.52. Whichstatement about the speed of light in these materials is true?a) The speed of light is the same in water and crown glass.b) The speed of light in water is faster than the speed of light in crown glass.c) The speed of light in crown glass is faster than the speed of light in water.d) More information is needed to compare the speed of light in the materials.A ray of light crosses the boundary between some substance with n = 1.54 and air, going from the substance into air. If the angle of incidence is 29◦ what is the angle of refraction? Calculate to 1decimal.A light ray strikes a 10-cm-thick glass pane, making a 30° angle to the perpendicular to the glass as it enters. When the ray reemerges into air on the other side of the pane, how much has it been displaced from where it would have been if the glass weren't there (this is the distance d indicated in the figure below)? A 1.25 cm B 2.23 cm C 1.94 cm D 2.46 cm