Concept explainers
(a) Rays of light are incident on a glass-air interface. Determine the critical angle for total internal reflection
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College Physics: Explore And Apply, Volume 2 (2nd Edition)
- Light traveling in a medium of index of refraction n1 is incident on another medium having an index of refraction n2. Under which of the following conditions can total internal reflection occur at the interface of the two media? (a) The indices of refraction have the relation n2 n1. (b) The indices of refraction have the relation n1 n2. (c) Light travels slower in the second medium than in the first. (d) The angle of incidence is less than the critical angle. (e) The angle of incidence must equal the angle of refraction.arrow_forwardThe index of refraction of a certain glass is (1.44x10^0). What is the critical angle for total internal reflection at the glass-air interface? Express your result in degrees with three significant figures.arrow_forwardA beam of light is propagating through a diamond (n1= 2.42) and strikes a diamond- air interface at an angle of incidence of 30°. (a) Will part of the beam enter the air (n2 = 1.00) or will the beam be totally reflected at the interface? (b) Repeat part (a), assuming that the diamond is surrounded by water (n2= 1.33) instead of air.arrow_forward
- A parallel sided plate of glass with an index of refraction of 1.60 is in contact with the surface of water (n=1.33) in a tank. A ray coming from above makes an angle of incidence of 30.0° with the normal to the top surface of the glass plate. (a) What is the speed of light in the glass plate? (b) What is the critical angle between the glass and the water? (c) What angle does this ray make with the normal in the water? (d) Include a diagram of the situation. [Diagram 3 pts.]arrow_forwardA ray of light is incident in air on a block of a transparent solid whose index of refraction is n. If n = 1.38, what is the largest angle of incidence θa for which total internal reflection will occur at the vertical facearrow_forwardA light ray coming from inside an unknown glass is traveling to air (n air=1.00) and hits the glass-air interface at an angle of 60 degrees from the interface. Which of the following values is a possible index of refraction of the glass if no light is transmitted in air?arrow_forward
- A piece of glass has an index of refraction of 1.5 and is submerged in water with n=1.33. A beam of monochrome light is incident on the glass and is refracted. (a) Find the angle of refraction if the angle of incidence is 32⁰. (b) Now, assume that the light is initially in the glass and incident on the glass-water surface. What is the refraction of light?arrow_forwardFor a specific wavelength of light the index of refraction of glass is 1.71 and for water 1.33. (a) if light traveling in the water is incident on a piece of this glass, calculate the angle of incidence for which the reflected light will be fully polarized. (b) calculate the critical angle for the glass-water interface.arrow_forwardThe critical angle for total internal reflection at a liquid–air interface is 42.5. If a ray of light traveling in the liquid has an angle of incidence at the interface of 35.0, what angle does the refracted ray in the air make with the normal?arrow_forward
- The critical angle (for total internal reflection) for a certain liquid-air surface is 47.7*. What is the index of refraction of the liquid?arrow_forwardA ray of light is incident at an angle 30.0° on a plane slab of flint glass surrounded by water. (a) Find the refraction angle. (b) Suppose the index of refraction of the surrounding medium can be adjusted, but the incident angle of the light remains the same. As the index of refraction of the medium approaches that of the glass, what happens to the refraction angle? (c) What happens to the refraction angle when the medium’s index of refraction exceeds that of the glass?arrow_forwardThe refractive index of water is 1.333 and the refractive index of diamond is 2.419. (a) Could total internal reflection happen if a ray of light goes from water into diamond? If yes, what is the critical angle? And draw a light ray diagram of the critical situation. If no, give the reasons. (b) Could total internal reflection happen if a ray of light goes from diamond into water? If yes, what is the critical angle? And draw a light ray diagram of the critical situation. If no, give the reasons.arrow_forward
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