Physics · Ray Optics
The critical angle of a medium for a specific wavelength, if the medium has relative permittivity εr = 3 and relative permeability μr = 43 for this wavelength when placed in vacuum, will be:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 115°
- 230°✓
- 345°
- 460°
Correct answer
30°
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