Question

You placed an object and a viewing screen at fixed positions in a horizontal plane. You then placed a convex lens and are allowed to move the lens anywhere in between these two. Assuming that the value of the focal length allows images to be formed, how many distinct, sharp image/s can be formed on the viewing screen?

Answer 1

The solution is given below.

PQ- object p'a't image pl f focal length un object distance wn image distance Dy pistance between object and sereew P & u Screen Da upu Now lens formula for formation of real destinct, sherop 'ronage 1/4 + 1/4 + ک) - D-u f D-utu (Denga f 2 ubu = to u 2-Dut Dfzo t this is a quadratic equation of a two roota arre ui DT N SD-u of 2 Uz D²-hof 2 70, D- DA D Druof D- J Drust 2 2 2 11 D Jozuar De J D²-4 of 2 So it is clear that two foomed for distinut, sharp images different position of lens between con be object and Sereen

Thank you.