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# Light travels from diamond to glass, glass to water and water to all. In this context when does total internal reflection may take place?1. When light travels from diamond to glass2. When light travels from glass to water3. When light travels from water to airSelect the correct answer from the codes given.2 and 3 only1 and 3 only1,2 and 31 and 2 only

A
2 and 3 only
B
1 and 3 only
C
1,2 and 3
D
1 and 2 only
Solution
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#### Refractive index is of the order :diamond > glass > water > airAll are moving from denser to rarer medium. Hence, its necessary condition.

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Light travels from diamond to glass, glass to water and water to all. In this context when does total internal reflection may take place?
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Select the correct answer from the codes given.
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