If in a birefracting crystal the magnitude Ex and Ey are equal and phase angle between the two is 600 then the waves are
A
linearly polarised
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B
plane polarised
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C
circularly polarised
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D
elliptically polarised
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Solution
The correct option is D elliptically polarised As both the component of electric field are present, it has to be either circularly or elliptically polarised.
For circularl polarisation, angle between both the components should be 90o
Since the angle between them is 60o, they are elliptically polarised.