must show all work and calculations.
apply snells law na sinA = nb sin B
where A is angle of incidence, B is angle of Refraction
na and nb are refractive index
a. nb = 1* sin 41.5/sin (25.4)
nb = 1.544
b. for criticla, angle B = 90 deg
so sin A = nb/na = 1/1.544
sinA = 0.647
A = 40.36 deg
n1*sini1 = n2*sinr1
1*sin41.5 = n2*sin25.4
n2= 1.54
a) glass
b) sinC = 1/n2
C = 40.49
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