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CBSE Class 12-science Answered

In the cases of lens, all distances are measured from the pole. So they have a direction. But they are not vectors why??
Asked by advssdrall | 30 Oct, 2022, 10:06: AM
Expert Answer
Sign-convention , for example , cartesian sign convention is used to have single equation for concave and convex reflecting/refracting  surfaces.
 
Same mirror equation is used for convex and concave mirror but distances have respective sign.
 
Similarly , same Lens equation is used for concave and convex lens , but distances have respective sign.
 
Sign of the distances is considered only for the direction of measurement and no mechanics is involved.
 
hence , though optical distances have sign and magnitude , they are not vectors
Answered by Thiyagarajan K | 30 Oct, 2022, 12:59: PM
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