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Speed of EM Waves and Media for GSEB: 7 solved questions

Real GSEB paper questions on speed of em waves and media, part of electromagnetic waves. Each opens with the options, the correct answer and a step-by-step solution. Papers run from 2015 to 2020. No sign-in needed to read them.

What this topic asks

• Speed in vacuum and in a medium — 2 questions
• Crossing an interface — 2 questions
• Refractive index and dielectric constant — 1 question
• Impedance, dimensions and radar — 1 question
• Units and dimensions — 1 question

All 7 questions with solutions

• If V_g, Vₓ and Vₘ are the velocities of γ-rays, X-rays and microwaves respectively in space, then GSEB Board July 2015
• If μᵣ be relative permeability and K be the dielectric constant of a given medium then the refractive index o… GSEB Board July 2016
• The frequency of an electromagnetic wave in free space is 2 MHz. When it passes through a region of relative… GSEB Board July 2017
• At room temperature, if the relative permittivity of water is 80 and the relative permeability is 0.0222, the… GSEB Board March 2018
• An electromagnetic wave coming from infinity enters a medium from the vacuum. For this wave is independent of… GSEB Board July 2018
• The unit of μ₀ε₀ is _. GSEB Board March 2020 (old course)
• The dimension of 1/(με) is the same as the dimension of , where μ is the magnetic constant and ε the permitti… GSEB Board March 2020