A small point object is placed in air at a distance of 60 cm from the convex spherical refracting surface of refractive index 1.5.If radius of curvatrure of the spherical surface is 25 cm,calculate the power of the refracting surface.

A point object is placed in air at distance of 40 cm from concave refrating surface of refractive index 1.5.If rasius of curvature of he spherical urface is 20 cm,calcuulate the position of the image.

A plano-convex lens is made of refractive index 1.6.If the radius of curvature of the curved surface is 60 cm,then focal length of the lens is:

A concave spherical surface of refractive index 3//2 is immersed in water of refracitve index 4//3 .If a piont object lies in water at a distance of 10 cm from the pole of the refracting surfae,calculate the position of the image.Given that radius of curvature of the spherical surface is 18 cm.

A point object is placed at the centre of a glass sphere of radius 6 cm and refractive index 1.5.The distance of the virtual image from the surface of the sphere is

A 5.0 cm long needle is placed vertically at a distance 20 cm in front of a double convex lens made of a material of refractive index 1.5 having radii of curvature as 10 cm of each surface. Find theheight of image formed.

Prism of refractive index 1.53 is placed in water of refractive index 1.33.If the angle of the prism is 60^@ ,calculate the angle of minimum deviation in water.

A 3.0 cm long needle is placed vertically at a distance 50 cm in front of a double convex lens made of a material of refractive index 1.6 having radii of curvature as 30 cm of each surface. Find the height of image formed by the lens.

What is spherical refracting surface? What do you mean by centre of curvature, radius of curvature, aperature and principal axis.

A 5.0 cm long needle is placed vertically at a distance 20 cm in front of a double convex lens made of a material of refractive index 1.5 having radii of curvature as 20 cm and 30 cm .Find the height of image formed.