[" 20.A point object is placed in air at distance of "40cm" from a "],[" concave refracting surface of refractive index "1.5" .If radius "],[" of curvature of the spherical surface is "20cm" ,calculate the "],[" position of the image."]

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 point object is placed in air at a distance of 40 cm from a concave refracting surface of refractive index 1.5. If the radius of curvature of the surface is 20 cm, then the position of the image is –

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 small point objects is placed in air at a distance of 60 cm from a convex spherical refractive surface of mu = 1.5 . If radius of curvature of spherical surface is 25 m , calculate the position of the image and the power of the refracting surface.

A point object is situated in air at a distance of 20 cm from a convex refracting surface of 5cm radius. The position of the image is [ mu=1.5]

A point object is situated in air at a distance of 20 cm from a convex refracting surface of 5cm radius. The position of the iamge is [ mu=1.5]

A small point object is placed at O at a distance of 0.60 metre in air from a convex spherical surface of refractive index 1.5 .If the radius of the curvature is 25cm then what is the position of the image on the principal axis.

An object is placed at a distance of 20cm from a equi-concave lens of focal length 30cm , whose one surface is silvered. If the radius of curvature of the silvered surface is 60cm , find the position and nature of the image.

An object is placed at a distance of 20cm from a equi-concave lens of focal length 30cm , whose one surface is silvered. If the radius of curvature of the silvered surface is 60cm , find the position and nature of the image.