Question:

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

Options :

  • (a) equal to that of glass
  • (b) less than one
  • (c) greater than that of glass
  • (d) less than that of glass

Answer :

(a) equal to that of glass

Answer Steps :

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