Physics · 2019
JEE Main · 10 April 2019, Shift 1 · Q24
A ray of light AO in vacuum is incident on a glass slab at angle 60^° and refracted at angle 30° along OB as shown in the figure. The optical path…
A ray of light AO in vacuum is incident on a glass slab at angle $\displaystyle 60^{\circ}$ and refracted at angle $\displaystyle 30$° along OB as shown in the figure. The optical path length of light ray from A to B is :
Official answer
(3)
$\displaystyle 2 a+2 b$
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JEE Main 2019 Physics question, with the answer from NTA’s final answer key. Where our answers come from.