A beam of light AO is incident on a glass slab (`mu=1.54`) in a direction as shown in the diagram The reflected ray OB is passed through a polaroid On viewing through the polaroid. We find that on rotating the polaroid (given `tan 57^@=1.54`)

Options

A. the intensity is reduced down to zero and remains zero
B. The intensity reduces down some what and rises again
C. There is no charge in intensity
D. The intensity gradually reduces to zero and then again increases

Answer

D