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Question

If the refractive index of glass with respect to air is 3/2, what is the refractive index of air with respect to glass?

A
12
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B
3
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C
13
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D
23
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Solution

The correct option is D 23
aμg=μgμa=32
where,
aμg= Refractive index of glass w.r.t. air
μg= Refractive index of glass
μa= Refractive index of air
Thus,
gμa=μaμg=23
where,
gμa= Refractive index of air w.r.t. glass

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