Question

Hi.....
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.SOLVE THIS.....

Answer 1

Hi...
Here is your answer:-
C=sin-¹(1/u)
= Sin-¹(1/2)
=Sin30°
So..C=30°
It is given that..i =2C
i =60°
Now,by using Snell's law,
u1sini =u2sinr
1×sin60°=2×sinr
✓3/2=sinr
✓3/4 = sinr
Thus, r = sin-¹(✓3/4)

Hope it helps.
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