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

Asked by Natasha banerjee | 19th Feb, 2011, 06:31: PM

Expert Answer:

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  | 20th Feb, 2011, 01:51: PM

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