JEE Main & Advanced
Mathematics
Complex Numbers and Quadratic Equations
Question Bank
Integral power of iota, Algebraic operations and Equality of complex numbers
question_answer
If z and\[{z}'\] are complex numbers such that \[z.z'=z\], then \[z'=\]
A)\[0+i\,0\]
B)\[1+0i\]
C)\[0+i\]
D)\[1+i\]
Correct Answer:
B
Solution :
According to condition \[{z}'\] is multiplicative identity therefore\[{z}'=1+0i\].