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answer of 29 is zero as convex power is negative and concave power is positive so both will cancel out
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plsss mark my answer as brainliest
hope its helpful ☺
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29) (1) Zero Dioptre
b'coz convex is negative value and concave is positive which makes them cancel out making it zero
b'coz convex is negative value and concave is positive which makes them cancel out making it zero
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