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A cylindrical tube of light 0.2m and rad...

A cylindrical tube of light 0.2m and radius R with sugar solution of concentration 'C' produce a rotation of `theta` in the plane of vibration of a plane polarized light. The same sugar solution is transferred to another tube of length 0.3m of same radius. The remaining gap is filled by distilled water. Now the optical rotation produced is

A

`theta`

B

`2 theta/3`

C

`3 theta/2`

D

`9 theta/4`.

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