# REFRACTION AT PLANE SURFACES

## DIAGRAM BASED QUESTIONS

The diagram below shows a light source P embedded in a rectangular glass block ABCD of critical angle 42°. Complete the path of the ray PQ till it emerges out of the block. (write necessary angles)
(2019) ## Copy the diagram given below and complete the path of light ray till it emerges out of the prism. The critical angle of glass is 42. In your diagram mark the angles wherever necessary.(2016)  ## Draw the diagram given below and clearly show the path taken by the emergent ray.(2014) ## (2013) ## A ray of light moves from a rare medium to a dense medium as shown in the diagram below. Write down the number of the ray which represents the partially reflected ray.(2012) ## A ray of monochromatic light enters a liquid from air as shown in the diagram given below:(i) Copy the diagram and show in the diagram the path of the ray of light after it strikes the mirror and reenters the medium of air.(ii) Mark in your diagram the two angles on the surface of separation when the ray of light moves out from the liquid to air.(2011) ## A ray of light enters a glass slab PQRS, as shown in the diagram. The critical angle of the glass is 42°. Copy this diagram and complete the path of the ray till it emerges from the glass slab. Mark the angles in the diagram wherever necessary. (2010) ## A ray of light XY passes through a right angled isosceles prism as shown below:  (i) What is the angle through which the incident and deviates and emerges out of the prism? (ii) Name the instrument where this action of prism is put into use. (iii) Which prism surface will behave as a mirror?(2018)  ## (2017) ## A stick partly immersed in water appears to be bent. Draw a ray diagram to show the bending of the stick when placed in water and viewed obliquely from above.(2010)  ## i) The diagram below shows a ray of white light PQ coming from an object P and incident on the surface of a thick glass plane mirror. Copy the diagram and complete it to show the formation of three images of the object P as formed by the mirror. ii) Which image will be the brightest image?  (2008) ## (2017) ## (2006) 