Question

A light Ray passes through a glass prism of angle of prism a =60° such that angle of incidence (i)=angle of emergence (e). also e =3/4A, then angle of deviation is
A. 60°
B. 30°
C. 90°
D. 45°​

Answer 1

Answer:

∴r

1

=r

2

r

1

+r

2

+180−A=180

A=r

1

+r

2

r

2

=r

1

=A/2

sinr

1

sini

=μ

μ=

sin(A/2)

sin(3A/4)

=

sin(60/2)

sin(

4

3×60

)

=

sin30

sin45

=

2

=1.414