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A small rod ABC is put in water making a...

A small rod ABC is put in water making an angle `6^(@)` with vertical. If it is viewed paraxially from above, it will look like bent shaped ABC'. The angle of bending `(/_CBC')` will be in degree is `(n_(w)=(4)/(3))`.

A

`2^(@)`

B

`3^(@)`

C

`4^(@)`

D

`4.5^(@)`

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