give your opinion about radius of curvature of a convex lens having different F1 and F2 ?
What would the lens called having equal F1 and F2
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give your opinion about radius of curvature of a convex lens having different F1 and F2 ?
What would the lens called having equal F1 and F2?
Answer:
If the sides of the lens have the different focal length 1 and focal length 2 it would look different if seen from a side. It will look symmetrical if it has equal focal length 1 and focal length 2.
IF focal length 1 is somehow greater than focal length 2 the image will appear from a far away distance from the centre.
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