Physics · Ray Optics

A light wave traveling in a medium of dielectric constant 4 is incident on a horizontal interface separating the medium from air. Find the minimum angle of incidence for which the total intensity of the incident wave will be reflected back into the same medium. (Given: relative permeability of the medium μr = 1)

Verified Solution4 OptionsUpdated: October 2026👁️1 View

160°✓
230°
320°
410°

Correct answer

60°

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