A ray of light strikes a flat glass block at an incidence angle of 8₁ = 39.8°. The glass is 2.00 cm thick and has an index of refraction that equals no = 1.65. 2.00 cm Ⓡ (a) What is the angle of refraction, 82, that describes the light ray after it enters the glass from above? (Enter your answer in degrees to at least 2 decimal places.) (b) with what angle of incidence, 83, does the ray approach the interface at the bottom of the glass? (Enter your answer in degrees to at least 2 decimal places.) (c) with what angle of refraction, 84, does the ray emerge from the bottom of the glass? (Enter your answer in degrees to at least 1 decimal place.)

Principles of Physics: A Calculus-Based Text
5th Edition
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
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Chapter25: Reflection And Refraction Of Light
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A ray of light strikes a flat glass block at an incidence angle of 8₁ = 39.8°. The glass is 2.00 cm thick and has an index of refraction that equals n = 1.65.
2.00 cm
(a) What is the angle of refraction, 82, that describes the light ray after it enters the glass from above? (Enter your answer in degrees to at least 2 decimal places.)
(b) with what angle of incidence, 83, does the ray approach the interface at the bottom of the glass? (Enter your answer in degrees to at least 2 decimal places.)
(c) with what angle of refraction, 084, does the ray emerge from the bottom of the glass? (Enter your answer in degrees to at least 1 decimal place.)
Transcribed Image Text:A ray of light strikes a flat glass block at an incidence angle of 8₁ = 39.8°. The glass is 2.00 cm thick and has an index of refraction that equals n = 1.65. 2.00 cm (a) What is the angle of refraction, 82, that describes the light ray after it enters the glass from above? (Enter your answer in degrees to at least 2 decimal places.) (b) with what angle of incidence, 83, does the ray approach the interface at the bottom of the glass? (Enter your answer in degrees to at least 2 decimal places.) (c) with what angle of refraction, 084, does the ray emerge from the bottom of the glass? (Enter your answer in degrees to at least 1 decimal place.)
(d) The distance d separates the twice-bent ray from the path it would have taken without the glass in the way. What is this distance (in cm)?
cm
(e) At what speed (in m/s) does the light travel within the glass?
m/s
(f) How many nanoseconds does the light take to pass through the glass along the angled path shown here?
ns
(g) Is the travel time through the block affected by the angle of incidence (and if so, how)?
O No, the time taken for the light to traverse the block is independent of incidence angle.
O Yes, a slightly larger angle will decrease the travel time.
O Yes, a slightly larger angle will increase the travel time.
Transcribed Image Text:(d) The distance d separates the twice-bent ray from the path it would have taken without the glass in the way. What is this distance (in cm)? cm (e) At what speed (in m/s) does the light travel within the glass? m/s (f) How many nanoseconds does the light take to pass through the glass along the angled path shown here? ns (g) Is the travel time through the block affected by the angle of incidence (and if so, how)? O No, the time taken for the light to traverse the block is independent of incidence angle. O Yes, a slightly larger angle will decrease the travel time. O Yes, a slightly larger angle will increase the travel time.
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