7. Light is going from glass into air, as shown below. The angle of incidence is 30°, and the index of refraction for the glass is n=1.4. Assume that the index of refraction for air is the same as for a vacuum (i.e., nair =1). What is the angle of refraction? At what critical angle would the light be "trapped" in the glass? What is the speed of light when it is travelling in the glass? a. b. с. glass air 02=??
7. Light is going from glass into air, as shown below. The angle of incidence is 30°, and the index of refraction for the glass is n=1.4. Assume that the index of refraction for air is the same as for a vacuum (i.e., nair =1). What is the angle of refraction? At what critical angle would the light be "trapped" in the glass? What is the speed of light when it is travelling in the glass? a. b. с. glass air 02=??
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Transcribed Image Text:7.
Light is going from glass into air, as shown below. The angle of incidence is
30°, and the index of refraction for the glass is n=1.4. Assume that the index of refraction for air is
the same as for a vacuum (i.e., nair =1).
What is the angle of refraction?
At what critical angle would the light be "trapped" in the glass?
What is the speed of light when it is travelling in the glass?
a.
b.
с.
01=30°
glass
air
02=??
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