Physics Help Forum Prism ...
 User Name Remember Me? Password

 Light and Optics Light and Optics Physics Help Forum

 Jul 3rd 2010, 06:04 AM #1 Junior Member   Join Date: Oct 2009 Posts: 5 Prism ... A ray is incident at an angle of incident i on one surface of a prism of small angle A and emerges normally from the opposite surface.If the refractive index of the material prism is U ,the angle of incident i is nearly equal to : ?. please give its working toooo....
 Jul 6th 2010, 01:51 AM #2 Senior Member   Join Date: Feb 2009 Location: Singapore Posts: 206 remember that U=sini/sinr __________________ To each his own.
 Jul 6th 2010, 10:44 AM #3 Senior Member   Join Date: Dec 2008 Location: Udupi, Karnataka, India Posts: 292 Inside the prism, the ray is normal to the second surface. SO r2 = 0 and r1 = A. Since A is small, sin(r1) ~ A. So u = sin(i)/sin(r1) = sin(i)/A sin(i) = u*A.

 Tags prism

 Thread Tools Display Modes Linear Mode

 Similar Physics Forum Discussions Thread Thread Starter Forum Replies Last Post ling233 Thermodynamics and Fluid Mechanics 1 Feb 25th 2016 12:24 AM anshulbshah Light and Optics 1 Dec 25th 2010 08:50 AM abhishek arora Light and Optics 1 Jul 2nd 2009 04:18 AM kala Advanced Mechanics 0 Dec 2nd 2008 05:46 PM