Question
Assignment Score: 93.9% Resources [ Give Up? Feedback Resume Question 7 of 39 > Attempt 4...
Assignment Score: 93.9% Resources [ Give Up? Feedback Resume Question 7 of 39 > Attempt 4 Building contractors often install double-glazed windows to prevent thermal energy (heat) from entering or exiting a building. In addition to being effective insulators, such windows present interesting optical effects. In the figure, a double-glazed window consists of two identical panes of glass (ng = 1.46), each yg = 42.0 mm thick, separated by an air gap of ya = 33.6 mm. If light incident on the glass makes an angle of d = 40.00 with respect to the glass, find the shift in path Ax as the light enters the room. Use a = 1.00 for the index of refraction of air. air glass Ax = 51.78 mm D Incorrect
Answers
The angle of incidence is i = 90 - 40 = 50
i = 50
Using Snell's law , we find the angle of refraction ,
R = sin i / sin r
We know that the ref.index is 1.46
then r = 31.6 . aprox = 32
Now ;
Lateral shift =tsin(i-r)/cosr =tsecr sin(i-r) where t is the thickness of the material and all other are having standar notation.
Substituting we get ,
t = 42 mm
i = 50
r = 32
Then x = [(42 * 10-3 m) * sin (50 - 32) ]/ cos(32)
x = 15.3042 mm
P.S.If this helped you please like the answer.Thankyou.
40.00 Ni r 42 mm glass с 33.6 mm A B 40°N air < glass 42 mm r A' B' Ax
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