if z1 and z2 are 2 complex nos such that z1+z2 is a real number then z2=

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if z1 and z2 are 2 complex nos such that z1+z2 is a real number then z2=

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Step-by-step explanation:Correct option is

A

z2=z1

for z1z2 to the real

z2=z1 or−z1

⇒z1z2=z1z1=∣z1∣2

or z1z2=−∣z1∣2

also

z1+z2=real

which isn’t possible for z2=−z1

for z1−z1=im (z1)

So,z2=z1