1. Tardigrade
  2. Question
  3. Physics
  4. A converging lens has a focal length of 0.12 m . To get an image of unit magnification the object should be placed at what distance from the converging lens?

Question Error Report

Thank you for reporting, we will resolve it shortly

Back to Question

Q. A converging lens has a focal length of $ 0.12\, m $ . To get an image of unit magnification the object should be placed at what distance from the converging lens?

J & K CETJ & K CET 2017Ray Optics and Optical Instruments

Solution:

Given: $f=+0.12\,m$ (converging lens),
$m=-1$
To get a unit magnification from a converging lens , i.e., convex lens, the object must be placed at $2F$
$u=-2\times 0.12\,m$
$=-0.24\,m$