The upper part of the bi-focal lens is a convex lens while its lower part is a concave lens.
The upper part of the bi-focal lens is a convex lens while its lower part is a concave lens. Correct Answer False
No, this is a false statement. The upper part of the bi-focal lens should be a concave lens, whereas the one used for distant vision as its lower part should be a convex lens. Such a bi-focal lens is used for reading purposes.
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Feb 20, 2025