_______ has unity refractive index.

diamond

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Air

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Water

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Vacuum

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Solution

The correct options are
B Air
D Vacuum
The refractive index of vacuum and air is taken as unity.

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_______ has unity refractive index.

The correct options are B Air D VacuumThe refractive index of vacuum and air is taken as unity.

The correct options are
B Air
D Vacuum
The refractive index of vacuum and air is taken as unity.