Consider two complex number and satisfying and

MATHEMATICS · Single correct · CBSE · Mathematics · Complex Numbers and Quadratic Equations · Complex Numbers and Quadratic Equations

Problem

Consider two complex number zz and ww satisfying ∣z∣=1|z|=1 and ∣w−2∣+∣w−4∣=2|w-2| + |w-4| = 2 . Then which of the following statement(s) is/are correct? (A) Re⁡(zw)\operatorname{Re}(zw) can never exceed 4. (B) If arg⁡(z)=arg⁡(w)\arg(z) = \arg(w) , then ∣z+2∣|z+2| is equal to 3. (C) The minimum value of ∣z−w∣|z-w| is equal to 2. (D) The minimum value of ∣z−w∣|z-w| is equal to 6.

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