Question

Let the refractive index of a denser medium with respect to a rarer medium be n12and its c critical angle be c.At an angle of incidence a when light is travelling from denser medium to rarer medium, a part of the light is reflected and the rest is refracted and the angle between reflected and refracted rays is 90. Angle a given by

Answer 1

Answer:

n

12

=

n

r

n

d

sin90

sinθ

=

n

3

n

2

sinR

sini

=

n

1

n

2

sini=sinr

sinR

sinr

=

n

1

n

2

=

sin90

sinθ

c

cosr

sinr

=sinθ

c

cosr

tanr=sinθ

c

r=tan

−1

(sinθ

c

)

Explanation:

plz make a brain list