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Why the focal length of convex lens is always positive?
Choose the correct option.
SOLVED: Image before (in-front) Retina Retina Long distance Object Coft Uaeaaug Human Eye Lens The above picture shows the defect of human eye; where the image of the long distance object is
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Which type of mirror has : (a) positive focal length ? (ii) negative focal length ? - YouTube
Optical Lenses Convex/Concave Mirror Theory
Which type of lens has negative power?A) Convex lensB) Concave lensC) Both A and BD) None
