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Complex Numbers question

2019 · 12 Apr · Shift 2 · Q32
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  5. /2019 · 12 Apr · Shift 2 · Q32

Complex Numbers question

2019 · 12 Apr · Shift 2 · Q32

JEE MainMathematicsComplex NumbersMCQ+4 / −1
Let z ∈\in∈ C with Im(z) = 10 and it satisfies 2z−n2z+n{{2z - n} \over {2z + n}}2z+n2z−n​ = 2i - 1 for some natural number n. Then :
  1. A
    n = 20 and Re(z) = –10
  2. B
    n = 40 and Re(z) = 10
  3. C
    n = 40 and Re(z) = –10
  4. D
    n = 20 and Re(z) = 10
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