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CBSE Class 10 Answered

can we determine the focal length of convex lens by keeping the object at infinity?
Asked by Natasha banerjee | 19 Feb, 2011, 06:31: PM
answered-by-expert 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.
regards
Team
Topperlearning
Answered by | 20 Feb, 2011, 01:51: PM

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