Question

The refractive index of water is greater than that of air but is less than that of glass or a diamond. Under which condition can there be total internal reflection in water?

Answer 1

C.When light travels from water to air

Step-by-step explanation:

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Answer 2

For total internal reflection to happen, light must travel from a medium object of higher density to a medium of lower density. To make sure that total internal reflection will happen in water, then the light must originate from glass or diamond before entering water.