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When a light ray travels from one medium...

When a light ray travels from one medium to another and gets refracted, velocity of light becomes double. For total internal reflection in this condition, the value of critical angle is

A

`30^(@)`

B

`60^(@)`

C

`90^(@)`

D

cannot be determined

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The correct Answer is:
A
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CHHAYA PUBLICATION-REFRACTION OF LIGHT-EXERCISE MULTIPLE CHOICE QUESTION
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  11. A fish looking up through the water see the outside world, contained i...

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  13. The length of a day due to atmospheric refraction

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  16. A ray of light passes through an isosceles triangle such that the angl...

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  17. The refractive index of a prism is sqrt(2) and its refractive angle is...

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