Q.

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

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a

behave as a perfect reflector

b

have refractive index exactly matching with that of the surrounding fluid

c

absorb all light falling on it

d

have refractive index one

answer is C.

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Detailed Solution

Objects are invisible in liquid if R.I of object is equal to the R.I of liquid.

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