A double-slit interference experiment is performed in the air. Later, the same apparatus is immersed in benzene (which has an index of refraction of 1.50), and the experiment is repeated.
When the apparatus is in benzene, you observe that the interference fringes are

Question

Quizplus · Accepted Answer

The wavelength of light decreases when it moves from air into a medium with a higher index of refraction, such as benzene. This decrease in wavelength leads to more closely spaced interference fringes because the fringe spacing is directly proportional to the wavelength of the light used in the experiment.

A Double-Slit Interference Experiment Is Performed in the Air