Question
Sat February 19, 2011 By: Natasha Banerjee

can we determine the focal length of convex lens by keeping the object at infinity?

Expert Reply
Sun February 20, 2011
Dear student
We can detemine the focal length of convex lens keeping an illuminated object at a very large distance but not at infinity; because if the object is at infinity we shall not be able to focus its image distincly.
Hope this helps.
regards
Team
Topperlearning
Sat September 23, 2017

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