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Old Oct 22nd 2013, 10:37 PM   #1
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combination of lens

1. How will focal length of these two lenses change?
i) combining two plano convex lenses attaching plane faces


ii) combining two half parts of a convex lens which cut horizontally
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Old Oct 23rd 2013, 09:53 AM   #2
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Originally Posted by siddhartha5432 View Post
1. How will focal length of these two lenses change?
i) combining two plano convex lenses attaching plane faces


ii) combining two half parts of a convex lens which cut horizontally
Try this link for a start. Look down the page for "compound lenses."

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