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 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 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.

An object is placed at a distance of 10 cm from a convex mirror of focal length 15 cm. Find the position and nature of the image

An object is placed at a distance of 10 cm from a convex mirror of focal length 15 cm. Find the position and nature of the image

An object 2 cm high is placed at a distance of 5 cm from a concave mirror,whose radius of curvature is 20 cm.Find the position of the image.

An object 8 cm long is placed at a distance of 100 cm from a concave mirror of radius of curvature 40 cm.Find the position of the image formed by the mirror.

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.