tag:blogger.com,1999:blog-4575155025214649471.post3932947210643477192..comments2024-03-20T00:19:58.164-07:00Comments on CBSE Pathshala: Derivation of Lens and mirror formula X Reflection and Refraction of lightJ.Sunil Sirhttp://www.blogger.com/profile/06753061330031546203noreply@blogger.comBlogger1125tag:blogger.com,1999:blog-4575155025214649471.post-63957886749362848842013-11-29T06:11:57.235-08:002013-11-29T06:11:57.235-08:00For some value of angle of incidence, the angle of...For some value of angle of incidence, the angle of refraction becomes 90°.The angle of incidence for which the angle of refraction is 90°, is called CRITICAL ANGLE.<br /><br />If the angle of incidence is greater than the critical angle, the angle of refraction becomes greater than 90° and the refracted ray is confined to the same medium only.This is called TOTAL INTERNAL REFLECTION.<br /><br />J.Sunil Sirhttps://www.blogger.com/profile/06753061330031546203noreply@blogger.com