JEE MATHEMATICS MCQ: COMPLEX NUMBERS

1 Easy

1 of 1

Application +4 | -1

Let

z_1, z_2

be two complex numbers such that

z_1 \neq 0

and

z_2 / z_1

is purely real, then

\left|\frac{2 i z_1+5 z_2}{2 i z_1-5 z_2}\right|

is equal to

View answer and explanation

Correct option: C

Option C (1) is correct because if z_2/z_1 is purely real, the magnitude of the given expression simplifies to 1.

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