Lens Formula

Introduction|Reflection of Light|Rules for Ray Diagrams|Reflection From Concave Mirrors|Reflection From Convex Mirrors|Questions|Refraction of Light|Law of Refraction|Image Formation|Lens Formula & Magnification

Lens makers Formula||Magnifications

Lens-Maker's Formula|Magnification|Rules For Image Formation|OMR

An extended object is placed at a distance of 5.0 cm from a convex lens of focal length 8.0 cm. (a) Draw the ray diagram (to the scale) to locate the image and from this, measure the distance of the image from the lens, (b) Find the position of the image from the lens formula and see how close the drawing is to the correct result.

An object of height 6 cm is placed perpendicular to the principal axis of a concave axis of a concave lens of focal length 5 cm. Use lens formula to determine the position, size and nature of the image if the distance of the object from the lens is 10 cm.

A 1.5 cm tall object is placed perpendicular to the principal axis of a convex lens of focal length 15 cm. Distance of object from the lens is 20 cm. Use lens formula to find the nature, position and size of the image.