An object is placed in front of two convex lenses one by one at a distance ‘u’ from the lens .The focal lengths of lenses are 30cm and 15cm respectively.If the size of image formed in two cases is same,then ‘u’ is-
"assignmentexpert.com" is professional group of people in Math subjects! They did assignments in very high level of mathematical modelling in the best quality. Thanks a lot
Comments