Question

A tube of 20 cm length filled with a solution of 15 gm of cane
sugar in 100 cc of water is placed in the path of a polarized light. Find the angle of rotation of the
plane of polarization if the specific rotation of cane sugar is 65°.

Answer 1

$$[\alpha]=\frac{\alpha}{cl}$$

$$65=\frac{\alpha}{(2)(0.15)}$$

$$\alpha=19.5\degree$$