Question

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Answer 1

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C) 1.- last option- The incident light rays must always have only the blue colour.

2- 3rd option

3 - last option- a non zero Acute angle

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Answer 2

Answer

1. d

2. b(From horizontal)

3.d

EXPLANATION

2. when a light ray prpogates denser to rarer medium it bends away from the 'normal'

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