Map pling learning As you may have learned when studying the properties of therm

Question

Map pling learning As you may have learned when studying the properties of thermal energy, building contractors often install double-glazed windows to prevent thermal energy ("heat") from entering/exiting the building. Although effective as insulators, such windows present interesting optical effects. In the figure, a double-glazed window comprises two identical panes of glass (ng 1.40) separated by an air gap. If the light encounters the glass at an angle of 40.00 with respect to the glass, find the shift in path Ax as the light enters the room. (Use n 1.00) 40.000 Number 13.6 mm 62.0 mm glass 49.6 mm air glass 62.0 mm Ax Incorrect. Previous 3 Give Up & View Solution Try Again Next Exit Explanation

Explanation / Answer

BY LAWS OF REFRACTION

1*sin40 = 1.40*sinr

sinr = 0.45

r = 26.74degree

shift = t*sin(i-r)/cosr (here t = width of slab)

total shift bry two glass slab = 2*62*sin(40-26.74)/cos26.74

x = 31.90mm

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