9. A glass prism whose refracting angle is 72º and
refractive index 1.66 is kept in a liquid of refractive
index 1.33. Calculate the angle of minimum deviation
for the parallel beam passing through the prism.
(Given : sin 36° = 0.5878, sin 47.2° = 0.7336)
Ans. 22.49
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6
Answer:
Explanation:
The Snell's law simply relates angles i and r to the refraction indices of the two media A and B. Therefore, refractive index of medium B relative to medium A is:
n=
sinr
sini
=
sin 45
0
sin 60
0
=
2
3
.
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