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Focal length of a convex lens is 20 cm which is placed at a distance of 30cm from the apparatus. Another lens of 10cm radius must be placed at how much distanceon another side to produce an image:

  1. 60cm
  2. 50cm
  3. 30cm
  4. 12cm

explain the answer

Arpan Mehta , 16 Years ago
Grade
anser 1 Answers
Pratham Ashish

hi arpan ,

der is something missing in ur 2nd part of d queston as for 1st lens u will get a virtual image at 12 cm from d lens but u don't specify d full condition for d 2nd part.....plz check ur source once more...

Last Activity: 16 Years ago
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