Question

The conjugate of z is the mirror image of z about the on the Argand plane.

• A. real axis
• B. imaginary axis
• C. origin

Answer 1

The correct option is A real axis

Let z = a + ib

Where a and b are real numbers

and a > 0, b > 0

Conjugate of z = a - ib.

Now, if z lies in the first quadrant, then conjugate of z should lie in the fourth quadrant and vice-versa Similarly if z lies in second quadrant, then the conjugate of z should lie in third quadrant. So, conjugate of z is the mirror image of z about the real axis on the argand plane.