Identify the polarisation of the wave given, Ex = cos wt and Ey = sin wt. The phase difference is -90^0.(a) Left hand circularly polarised(b) Right hand circularly polarised(c) Left hand elliptically polarised(d) Right hand elliptically polarisedI have been asked this question during an online interview.My question is taken from Types of Polarization topic in portion EM Wave Propagation of Electromagnetic Theory

Identify the polarisation of the wave given, Ex = cos wt and Ey = sin

1.	Identify the polarisation of the wave given, Ex = cos wt and Ey = sin wt. The phase difference is -90^0.(a) Left hand circularly polarised(b) Right hand circularly polarised(c) Left hand elliptically polarised(d) Right hand elliptically polarisedI have been asked this question during an online interview.My question is taken from Types of Polarization topic in portion EM Wave Propagation of Electromagnetic Theory
Answer» The correct option is (B) Right hand circularly polarised To elaborate: The magnitude of the Ex and Ey components are the same. THUS it is circular POLARISATION. For -90 PHASE difference, the polarisation is right HANDED. In other words, the rotation is in anti-clockwise direction. Thus the polarisation is right hand circular.

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