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The speed of light in medium b is c3, where c= speed of light in vacuum and light refracts from medium a to medium b making angles 45∘ and 60∘ respectively with normal. The speed of light in medium a is

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The speed of light in medium b is c3, where c= speed of light in vacuum and light refracts from medium a to medium b making angles 45 and 60 respectively with normal. The speed of light in medium a is



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