Saved Bookmarks
| 1. |
A ray PQ is incident normally on the face AB of a triangular prism of refracting angle of 60^(@), mae of a transparent material of refractive index ( sqrt(3))/( 2) , as shown in the figure. Trace the path of the ray as it passes through the prism. Also calculate the angle of emergence and angle of deviation. |
|
Answer» Solution :If `i_(c)` is the critical ANGLE for the prism `//` material, `mu = ( 1)/( sini_(c ))` `:.Sini_(c ) = ( 1)/( mu ) = ( sqrt(3))/( 2)` `rArr i_(c) = ( 60^(@)` Angle of incidence at face AC of the prism `= 60^(@)` Hence, refracted ray GRAZES the SURFACE AC. `rArr` Angle of emergence `= 90^(@)` `rArr ` angle of deviation `= 30^(@)` 
|
|