How will the following be affecte on cutting a converging lens into two equal halves along the principal axis?
intensity of image formed by half lens.

If a lens is cut into two pieces perpendicular to the principle axis and only one part is used the new focal length.

How is image formed by a concave lens? Show by drawing diagram as to what will be the position and nature of the image formed by a concave lens?

A equiconvex lens of focal length 30 cm is divided into two equal halves in thickness.find the focal lnegth of eah half.

An object is held at the principal focus of a concave lens of focal length F. where is the image formed?

In these question, a statement of asertion followed by a statement of reason is given .Choose the correct answer out of the following choices: Assertion and reason both are correct statements and reason is correct explanation for assertion. Assertion and reason both are correct statements but reason is not correct explanation for assertion. Assertion is correct statement but reason is wrong statement. Assertion is wrong statement but reason is correct statement. Assertion:Position of image approches focus of a lens,only when object approaches infinity. Reason:Paraxial rays inident parallel to principal axis intersect at the focus after refraction from the lens.

An object 5 cm in length is held 25cm away from a converging lens of focal length 10 cm. Draw the ray diagram and find the position, size and the nature of image formed