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Question: Answered & Verified by Expert
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
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Options:
  • A equal to that of glass
  • B less than one
  • C greater than that of glass
  • D less than that of glass
Solution:
2477 Upvotes Verified Answer
The correct answer is: equal to that of glass
If biconvex lens behave like plane sheet, ray will pass undeviated through it only when medium has same refractive index as that of biconvex lens.

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