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 ray will :
Held on 9 Apr 2013 · Verified 6 Jul 2026.
suffer total internal reflection in both cases (A) and (B)
suffer total internal reflection in case (B) only
have partial reflection and partial transmission in case (B)
have 100% transmission in case (A)
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