Properties of EM Waves — Predicted 2026

AI-Predicted Question Angles for UPSC 2026

Based on trend analysis, current affairs, and recurring themes in Properties of EM Waves.

Combined numerical problem on speed and field relation

high

NEET often combines multiple concepts into a single numerical problem. A question could provide the electric field strength in a medium with given permittivity/permeability and ask for the magnetic field strength or intensity. This requires calculating the speed in the medium first, then using $E=vB$ (instead of $E=cB$) and the intensity formula $I = \frac{1}{2} v \epsilon E_0^2$. This tests a deeper understanding of how properties change in a medium.

Conceptual question on energy distribution and Poynting vector direction

medium

While the energy density and Poynting vector are covered, questions specifically asking about the equal distribution of energy between electric and magnetic fields, or the precise direction of energy flow (using $\vec{E} \times \vec{B}$), could be posed. This would test conceptual understanding beyond simple formula recall, requiring students to interpret the vector nature of energy flow.

Application-based question related to radiation pressure or EM spectrum uses

medium

NEET sometimes includes questions that link theoretical concepts to real-world applications. For instance, a scenario involving a solar sail and calculating the force/acceleration due to radiation pressure, or a question requiring identification of the correct EM wave type for a specific medical or communication application (e.g., MRI, sterilization, remote control), could be asked. This tests practical knowledge alongside theoretical understanding.