MCQ
An object is immersed in a fluid. In order that the object becomes invisible, it should
  • A
    Behave as a perfect reflector
  • B
    Absorb all light falling on it
  • C
    Have refractive index one
  • Have refractive index exactly matching with that of the surrounding fluid

Answer

Correct option: D.
Have refractive index exactly matching with that of the surrounding fluid
d
(d) Objects are invisible in liquid of $R.I.$ equal to that of object.

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