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Physics
What should be refractive index of a transparent medium to be invisible in vacuum?
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Q. What should be refractive index of a transparent medium to be invisible in vacuum?
Wave Optics
A
1
61%
B
< 1
17%
C
> 1
9%
D
None of these
13%
Solution:
For, the light to be invisible in vacuum, $\mu$ of medium must be equal to $\mu$ of vacuum, which is 1 .