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Wave Optics
When a biconvex lens of glass having refractive index 1.47 is dipped in a liquid, it acts as a plane sheet of glass. This implies that the liquid must have refractive index
equal to that of glass
less than one
greater than that of glass
less than that of glass
A.
equal to that of glass
If biconvex lens behaves like a plane sheet, the ray will pass undeviated through it only when the medium has a same refractive index as that of a biconvex lens.
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