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கழை என்ற சொல் உணர்த்தும் பொருள் யாது ? * |
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Answer» A DOCTOR prescribes a connective lene of POWER + 0,25D to a person. The focal LENGTH of lens and the type is A. +4m & convex lens B. - 2m and convex lens C.+4m and concave lens D.- 4m and concave lens |
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