A portion of a lens is broken. Will we get a complete image of an object with such a lens?

The radii of curvature of he two surfaces of a lens are not the same .It forms image of an object.The surfaces of the lens facing the object and image are interchanged .Will the position of the image change ?

The image formed by the lens is erect and its length is three times the length of an object. If the focal length of the lens is 15 cm, what kind of lens it is ? Calculate the object and image distance.

A plano convex lens of refractive index 1.5 and radius of curvature 30cm. Is silvered at the curved surface. Now this lens has been used to form the image of an object. At what distance from this lens an object be placed in order to have a real image of size of the object.

In an optics experiment, with the position of the object fixed, a student varies the position of a convex lens and for each position, the screen is adjusted to get a clear image of the object. A graph between the object distance u and the image distance v, from the lens, is plitted using the same scale for the two axes. A straight line passing through the origin and making an angle of 45^circ with x-axis meets the experimental curve at P. The coordinates of P will be.

One half of a convex lens is covered with a black paper .Will this lens produce a complete image of the object? Explain your observation

The image obtained with a convex lens is erect and its lenth is four times the length of the object.If the focal length of the lens is 20 cm,calculate the object and image distance.

A convex lens is used to obtain a magnified image of an object on a screen 10 m from the lens .If the magnification is 19,find the foal length of the lens.