Question

a concave lens has focal length of 15 cm .at what distance should the object from lens be placed so that it forms an image at 10 cm from the lens? what is ray diagram for this question?

Answer 1

foot Da zip cop so do go cup

Answer 2

A concave lens always forms a virtual, erect image on the same side of the object.

Image-distance v = –10 cm;

Focal length f = –15 cm;

Object-distance u = ?