Physics · 2020
JEE Main · 8 January 2020, Shift 1 · Q15
The critical angle of a medium for a specific wavelength, if the medium has relative permittivity 3 and relative permeability 4/3 for this…
The critical angle of a medium for a specific wavelength, if the medium has relative
permittivity $\displaystyle 3$ and relative permeability $\displaystyle \frac{4}{3}$ for this wavelength, will be :
Official answer
(1)
$\displaystyle 30^{\circ}$
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JEE Main 2020 Physics question, with the answer from NTA’s final answer key. Where our answers come from.