# Joint Entrance Examination/2000 Screening/Q032 Divergent beam passsing from a glass slab

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| Original Question by Dharav Here's the question... A diverging beam of light from a point source S having divrgence angle α falls symmetrically on a glass slab as shown. The angles of incidence of the two extreme rays are equal. If the thickness of the glass slab is t and its refractive index is n, then the divergence angle of the emergent beam is (A) Zero (B) α (C) sin$^{-l}$(1/n) (D) 2sin$^{-l}$(1/n) Posted by Dharav 05:21, 18 August 2009 (UTC) | What's Up? Latest discussions on the forum Optics-Help Joint Entrance Examination/2000 Screening/Q014 Intermediate image in a compound microscope Joint Entrance Examination/2000 Screening/Q016 Effect of changing width of slits on interference pattern Joint Entrance Examination/2000 Screening/Q030 Hollow Double Convex Lens with variable liquids inside Joint Entrance Examination/2000 Screening/Q032 Divergent beam passsing from a glass slab Joint Entrance Examination/2000 Screening/Q033 Glass slab in water and total internal reflection Physics-Help User:Thewinster/Sandbox User:Thewinster/Sandbox/Forum-Watch Joint Entrance Examination/2000 Screening/Q020 Melting of ice and evaporation - graph Joint Entrance Examination/2000 Screening/Q018 Spinning rod with a bead on it, time when it starts slipping Joint Entrance Examination/2000 Screening/Q021 Ionized gas subjected to electric and magnetic fields |
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