The rotation of polarized light in an optically active medium is found to be approximately proportional to the inverse square of the wavelength.
a. The specific rotation of glucose is 20.5°. A glucose solution of unknown concentration is contained in a 12-cm-long tube and is found to rotate linearly polarized light by 1.23°. What is the concentration of the solution?
b. Upon passing through a 1-mm-thick quartz plate, red light is rotated about 15°. What rotation would you expect for violet light?
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