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Let $z_{1}, z_{2}$ be two complex numbers such that $z_{1} \neq 0$ and $z_{2} / z_{1}$ 1 is purely real, then $|\frac{2 i z_{1} + 5 z_{2}}{2 i z_{1} - 5 z_{2}}|$ is equal to

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Correct option is C

Suppose z2/z1=a,where a∈R Now, , 2iz1+5z22iz1−5z2=2i+5z2/z12i−5z2/z1=2i+5a2i−5a=1

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Let z1, z2 be two complex numbers such that z1≠0 and z2/z1 1 is purely real, then 2iz1+5z22iz1−5z2 is equal to

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Let $z_{1}, z_{2}$ be two complex numbers such that $z_{1} \neq 0$ and $z_{2} / z_{1}$ 1 is purely real, then $|\frac{2 i z_{1} + 5 z_{2}}{2 i z_{1} - 5 z_{2}}|$ is equal to