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NEET2004PhysicsRay OpticsActual

An object is immersed in a fluid. In order that the object becomes invisible, it should

Options

  1. Abehave as a perfect reflector
  2. Babsorb all light falling on it
  3. Chave refractive index one
  4. Dhave refractive index exactly matching with that of the surrounding fluid.

Correct answer

D. have refractive index exactly matching with that of the surrounding fluid.

Step-by-step solution

If the refractive index of two media are same, the surface of separation does not produce refraction or reflection which helps in visibility.

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