Part A What is the critical angle for light at the glass-liquid interface when t

Question

Part A What is the critical angle for light at the glass-liquid interface when the glass with n = 1.58 is immersed in water? Express your answer using three significant figures. If there is no answer, enter none.

= 57.5

Part B

What is the critical angle for light at the glass-liquid interface when the glass with n = 1.58 is immersed in benzene?

Express your answer using three significant figures. If there is no answer, enter none.

Part C

What is the critical angle for light at the glass-liquid interface when the glass with n = 1.58 is immersed in diiodomethane?

Express your answer using three significant figures. If there is no answer, enter none.

Explanation / Answer

n1 =1.58 ,

for citical angle , angle of refraction theta2 = 90 degrees

from snells law

n1 sin(theta1) = n2 sin(theta2)

1.58sin(theta1) = n2sin(90)

theta1 = arcsin(n2/1.58)

PartA: n2 = 1.33

theta = arcsin(1.33/1.58)

theta = 57.5 degrees

Part B:

n = 1.5

theta = arcsin(1.5/1.58)

theta = 71.7 degrees

Part C: n2 = 1.741

total internal reflection is possible when light travel from denser medium to rarer medium i.e (n1 > n2)

but for diiodomethane refractive index is greater than glass.

answer is None

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