For a ray of light travelling from a denser medium of refractive index `mu_1` to a rarer medium of refractive index `mu_2`,prove that`(mu_2)/(mu_1) = sin C`,
where C is the critical angle of incidence for the media.

Prove that mu=1/sinC where C is the critical angle?

A concave lens made of a material of refractive index mu_g is immersed in a medium of refractive index mu_l , equal to and

Obtain lens makers formula using the expression (mu_1)/u + (mu_2)/v = (mu_2-mu_1)/R Here the ray of light propagating from a rare r medium of rerfracitve index (mu_1) to a dneser medium of refractive indes (mu_2) is incident on the convex side of spherical refracting surface of radius of curvature R.

Derive the equation relating u,v and R in case of refraction i a medum of refactive index mu_1 from a medium of refractive index mu_2 .State te assumption made in you deriation.

A double convex lens made from a material of refractive index mu_1 is immersed in a liquid of refactive index mu_2 where mu_2 > mu_1 . What change, if any, would occur in the nature of the lens?

A ray of light travelling in a transparent medium of refractie index mu falls on a surface separatign the medium from air at an angle of incidence of 45^@ .For which of the following velues of mu ,the ray can indergo total internal reflection?

A concave lens made of a material of refractive index mu_g is immersed in a medium of refractive index mu_l , greater than,A paprallel beam of light is incident on the lens. Trace the path of emerged rays

A convex lens made of a material of refractive index mu_1 , is kept in a medium of refractive index mu_2 , Parallel rays of light are incident on the lens. Complete the pathof rays of light emerging from the convex lens if mu_1 = mu_2 .

A convex lens made of a material of refractive index 'mu_1' is kept in a medium of refractive index mu_2 , Parallel rays of light are incident on the lens. Complete the pathof rays of light emerging fromthe convex lens if mu_1 < mu_2 .