A ray of light from a denser medium strikes a rarer medium at an angle of incidenc i. The reflected and refracted rays make an angle of `pi//2` with each other. If the angles of reflection and refraction are r and `r^(')` , then the criticall angle will be

A ray of light from a denser medium strikes a rarer medium at an angle of incidence I (see figure ). The reflected and refracted rays make an angle of 90^(@) with each other. The angles of reflection and refraction are r and r^() . The critical angle is

A ray of light from a denser medium strike a rarer medium at an angle of incidence I (see Fig). The reflected and refracted rays make as angle of 90degrees with each other. The angles of reflection and refraction are r and r The critical angle is

A ray of light from a denser medium strike a rarer medium at an angle of incidence I (see Fig). The reflected and refracted rays make as angle of 90degrees with each other. The angles of reflection and refraction are r and r The critical angle is

A ray of light from a denser medium strike a rarer medium at an angle of incidence I (see Fig). The reflected and refracted rays make as angle of 90degrees with each other. The angles of reflection and refraction are r and r The critical angle is

A ray of light from a denser medium strikes a rarer medium at angle of incidence i . The refrected and the refracted rays make an angle of 90^@ with each other. The angles of reflection and refraction are r and r^' respectively. The critical angle is (i) sin^-1(tanr) (ii) sin^-1(tani) (iii) sin^-1(tanr) (iv) tan^-1(tani)

A ray of light passes from a denser medium to a rarer medium at an angle of incidence i. The reflected and refracted rays make an angle of 90^@ with each other. The angle of reflection and refraction are resepectively r and r'. The critical angle is given by :

A ray of light from a denser medium strikes a rare medium as shown in figure. The reflected and refracted rays make an angle of 90^(@) with each other. The angles of reflection and refraction are r and r'. The critical angle would be

A ray of light from a denser medium strikes a rarer medium. The reflected and refracted rays make an angle of 90^(@) with each other. The angle of reflection and refraction are r and r^(1) . The critical angle would be