Reflection/Refraction homework help

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The discussion focuses on solving a homework problem involving light refraction through a glass prism with a refractive index of 1.65. In part A, when the prism is in air, the light ray emerges at an angle of approximately 50.14 degrees after passing through the prism. The critical angle for air is calculated to be 41.1 degrees. In part B, the refractive index for water is noted to be around 1.3, leading to a similar approach for determining the light's emergence angle in water. The calculations confirm the expected behavior of light as it transitions between different media.
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Homework Statement



A light ray is incident on a glass prism with n=1.65. (A) If the prism is immersed in air, where does the light ray emerge into the air? At what angle? (B) If the prism is immersed in water, where does the light emerge into the water? At what angle?

_____ A_____C
_____ |90 45/
_____ |____/
----->|___/
_____ |n /
_____ B /

Homework Equations


n_a sin(theta_a) = n_b sin(theta_b)
sin(theta)critical= n_b/n_a

The Attempt at a Solution



PART A:

AB)
1.0 sin(0)= 1.65 sin(theta)'
(theta)'= 0 (no bending)

BC) (crtitical angle 41.1 in air?)
1.65 sin 45 = 1.52 sin (theta)'
(theta)'= 50.14 <- final answer

PART B:
just change the n's?

Any good?
 
Last edited:
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B, yes n for water is around 1.3
 

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