A linearly polarised electromagnetic wave given as E = E 0 i cos( kz – ω t ) is incident…
Physics · NEET · NTA Exams — Optics
A linearly polarised electromagnetic wave given as E = E0\(\hat{i}\)cos(kz – ωt) is incident normally on a perfectly reflecting infinite wall at z = a. Assuming that the material of the wall is optically inactive, the reflected wave will be given as :
- Er = E0\(\hat{i}\)cos(kz – wt)
- Er = E0\(\hat{i}\)cos(kz + wt)
- Er = –E0\(\hat{i}\)sin(kz + wt)
- Er = E0\(\hat{i}\)sin(kz – wt)
Answer
(C) E r = – E 0 i sin( kz + w t )
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