A beam of light AO is incident on a glass slab (μ = 1.54) in a direction as shown in…
Physics · JEE Main · NTA Exams — Optics
A beam of light AO is incident on a glass slab (μ = 1.54) in a direction as shown in figure. The reflected ray OB is passed through a Nicol prism on viewing through a Nicol prism, we find on rotating the prism that
- the intensity is reduced down to zero and remains zero
- the intensity reduces down somewhat and rises again
- there is no change in intensity
- the intensity gradually reduces to zero and then again increases
Answer
(D) the intensity gradually reduces to zero and then again increases
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