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प्रश्न
Make the correct for each of the following :
With reference to the fig, the refractive index of the glass block is
विकल्प
`"sin w"/"sin z"`
`"sin x"/"sin w"`
`"sin u"/"sin v"`
`"sin u"/"sin x"`
`"sin w"/"sin x"`
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उत्तर
`"sin w"/"sin x"`
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