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A beam of light is incident on a glass s...

A beam of light is incident on a glass slab `(mu = 1.54)` in a direction as shown in the figure. The reflected light is analysed by a polaroid prism. On rotating the polaroid, `(tan 57^(@) = 1.54)`
`

A

the intensity remains unchanged

B

the intensity is reduced to zero and remains at zero

C

the intensity gradually reduces to zero and then again increase

D

the intensity increases continuously

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