Physics · 2013
JEE Main · 9 April 2013, Shift 1 · Q15
Light is incident from a medium into air at two possible angles of incidence (a) 20° and (b) 40°. In the medium light travels 3.0 cm in 0.2 ns. The…
Light is incident from a medium into air at two possible angles of incidence (a) $\displaystyle 20$° and (b) $\displaystyle 40$°. In the medium light travels $\displaystyle 3.0$ cm in $\displaystyle 0.2$ ns. The ray will :
Official answer
(2)
suffer total internal reflection in case
(b) only
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JEE Main 2013 Physics question, with the answer from NTA’s final answer key. Where our answers come from.