Question

for total internal reflection, critical angle will be maximum when the light ray travel from

a) glass to air
b) diamond to air
c) glass to water
d) water to air​

Answer 1

Answer:

Critical angle when a light travels from a medium n

2

to n

1

, θ=sin

−1

(

n

2

n

1

)

where n is the refractive index.

We know, n

air

=1 n

water

=1.33 n

glass

=1.5 n

diamond

=2.4

From this we get,

n

glass

n

water

=0.886 as the maximum value.

Thus critical angle will be maximum when light travels from glass to water.

Explanation:

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