GATE EC 2015 Set 2 — Question 35
Go beyond PYQs with Success TrackerAI-powered personalised practice and doubt support. Unlimited practice on eligible plans; AI usage limits apply.MCQ+1 / -0.33MediumPolarization (Linear, Circular, Elliptical)Plane WavesElectromagnetics
Electromagnetics → Plane Waves → Polarization (Linear, Circular, Elliptical)
Last updated
Question
The electric field of a uniform plane electromagnetic wave isThe polarization of the wave is
Correct answer
(D) left handed elliptical
Solution
The electric field is given by .
Taking the real part to find the instantaneous field:At :
For a wave propagating in the direction, clockwise rotation when looking in the direction of propagation corresponds to Left Handed polarization (IEEE convention).
Therefore, the wave is left handed elliptical.
Taking the real part to find the instantaneous field:At :
1.Ellipticity: Since the amplitudes of the and components are unequal ( and ), the polarization is elliptical.
2.Handedness: Observe the rotation of the vector as increases at :
- At :
- At :
For a wave propagating in the direction, clockwise rotation when looking in the direction of propagation corresponds to Left Handed polarization (IEEE convention).
Therefore, the wave is left handed elliptical.
Continue learning with Success Tracker
A step still unclear? Work through it with support
Use Success Tracker to ask about the reasoning, then try another GATE EC question to check your understanding.
AI-powered practice· Unlimited practice on eligible plans
- PYQs with solutions
- Attempt available previous-year questions, then compare your reasoning with the worked solution. Coverage varies by stream.
- Practice that adapts
- Choose a topic, work on weaker areas and bookmark questions to revisit. Your attempts feed your progress tracking.
- AI doubt support
- Ask follow-up questions about a step or concept while practising, instead of stopping at the final answer.
Unlimited practice is available on eligible plans. Free practice and AI usage have limits; check the current plan allowances before choosing.
This page stays readable without an account. AI responses can be wrong; check them against the solution and source material.
More questions on Plane Waves
2026 Set 1 Q21Consider the Friis' transmission equation , where…2026 Set 1 Q24The electric field of a monochromatic plane wave travelling in a lossless isotropic and homogenous…2026 Set 1 Q28Which option(s) represents/ represent the dielectric loss tangent of a substrate?2026 Set 1 Q33The cutoff frequency (in GHz) for the dominant mode of an air-filled rectangular…2026 Set 1 Q34For a lossless passive two-port network, and intersect at -3 dB. For a lossy…