What is the Relation Between Focal Length and Refractive Index Class 10 | BYJU'S Experiment Shorts

Write the relation between critical angle and refractive index of a medium.

Obtain the relation between critical angle and refractive index for a pair of media.

(i) If f = + 0.5 m , what is the power of the lens ? (ii) The radii of curvature of the faces of a double convex lens are 9 cm and 15 cm . Its focal length is 12 cm . What is the refractive index of glass ? (iii) A convex lens has 20 cm focal length in air. What is the focal length in water ? (Refractive index of air-water = 1.33 , refractive index of air-glass = 1.5 ).

What is the relation between refractive index and critical angle for a given pair of optical media ?

State the relation between the refractive index and the critical angle. Derive with suitable diagram.