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