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

Question

An object is immersed in 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 (D) have refractive index exactly matching with that of the surrounding fluid

Tardigrade Admin · Accepted Answer

When the refractive index of two mediums are exactly same, then there will not occur refraction and reflection at the common surface of separation due to which the visibility is observed.

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

behave as a perfect reflector

absorb all light falling on it

have refractive index one

have refractive index exactly matching with that of the surrounding fluid

When the refractive index of two mediums are exactly same, then there will not occur refraction and reflection at the common surface of separation due to which the visibility is observed.