Question

The angle of incidence i and refraction r are equal in a transparent slab when the value of i is

1. 0
2 . 45
3. 90
4. depends on the material of the slab


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Answer 1

1. 0⁰

The angle of incidence i and refraction r are equal in a transparent slab when the value of i is

1. 0

2 . 45

3. 90

4. depends on the material of the slab