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Question: Answered & Verified by Expert
A transparent plastic bag filled with air forms a concave lens. Now, if this bag is completely immersed in water, then it behaves as
PhysicsRay OpticsNEET
Options:
  • A Divergent lens
  • B Convergent lens
  • C Equilateral prism
  • D Rectangular slab
Solution:
1408 Upvotes Verified Answer
The correct answer is: Convergent lens
In air 1 f =( μ p 1 )( 1 R 1 1 R 2 )

In water 1 f =( μ p μ ω 1 ) ( 1 R 1 1 R 2 )

as retractive index of water is more than retractive index of plastic bag filled with air

If behave as convergent lens

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