If the angle of incidence of a Ray of light falling on the glass surface is 30 degree....
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Answer:
Given ,
n
ag
=
2
3
∠i=30
0
From snell's law
n=
sinr
sini
By putting values of n, i in equation
we get
2
3
=
sinr
sin30
0
⇒sinr=
3
1
r=19
0
47
′
≃20
0
the angle of refraction is 20 degree
Explanation:
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