1. [C] 8 cm Magnification, m = 3 v = 24 cm, Image distance Object distance, u =? As, m = v/u u = v/m =24/3 = 8 cm Hence, she should put the object at 8 cm from the lens L₂.

    [C] 8 cm
    Magnification, m = 3
    v = 24 cm, Image distance
    Object distance, u =?
    As, m = v/u
    u = v/m
    =24/3
    = 8 cm
    Hence, she should put the object at 8 cm from the lens L₂.

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  2. [A] imaginary line joining of two centres of curvature

    [A] imaginary line joining of two centres of curvature

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  3. [A] Ni and Cr Stainless steel is an alloy of iron (74%), nickel (8%) and chromium (18%)

    [A] Ni and Cr
    Stainless steel is an alloy of iron (74%), nickel (8%) and chromium (18%)

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