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

Asked by Natasha banerjee 19th February 2011, 6:31 PM
Answered by Expert
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.
Answered by Expert 20th February 2011, 1:51 PM
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