Question

calculate the crictical angle between glass and air​

Answer 1

Critical angle of a medium is the angle of incidence which causes grazing refracted ray when it passes from denser medium i.e.

So μ

1

sinc=μ

2

sin90

0

Hence for a glass air interference

μ

g

sinc=1

sinc=

3

2

c=sin

−1

(

3

2

)

c=41.8

0

Answer 2

Answer:

48.1 degree

Explanation:

Critical angle is that angle of incidence at which angle of refraction become 90 degree.