Physics · 2019
JEE Main · 12 January 2019, Shift 1 · Q22
A light wave is incident normally on a glass slab of refractive index 1.5. If 4 % of light gets reflected and the amplitude of the electric field of…
A light wave is incident normally on a glass slab of refractive index 1.5. If $\displaystyle 4 \%$ of light gets reflected and the amplitude of the electric field of the incident light is $\displaystyle 30$ V/m, then the amplitude of the electric field for the wave propogating in the glass medium will be :
Official answer
(2)
$\displaystyle 24 \mathrm{~V} / \mathrm{m}$
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JEE Main 2019 Physics question, with the answer from NTA’s final answer key. Where our answers come from.