MCQS

Complex Numbers MCQS With Solution | Solve Complex Numbers MCQS

11. The value of arg(−5i) is: 

A. 0◦ 

B. −90◦ 

C. 180◦ 

D. 270◦ 

12. The value of Arg(−5i) is: 

A. 0◦ 

A
 

B. -90◦ 

C. 180◦ 

D. 270◦ 

13. The value of Arg(−5) is: 

A. 0◦ 

B. 90◦ 

C. 180◦ 

D. 270◦ 

14. The equation of a circle with center at origin and radius 2 is: 

A. |z| = 2 

B. |z| = 4 

C. |z| = √ 2 

D. None of these 

15. Which of the following is not true? 

A. arg(z1z2)= arg(z1) + arg(z2) 

B. Arg(z1z2)= Arg(z1) + Arg(z2) 

C. zz̅= |z|2 

D. arg( z1z2 )= arg(z1) – arg(z2) 

16. The least value of |z1 + z2| is: 

A. ||z1| + |z2|| 

B. ||z1||z2|| 

C. ||z1|/|z2|| 

D. ||z1| − |z2|| 

17. The inequality ||z1| − |z2|| ≤ |z1 + z2| ≤ |z1| + |z2| is called: 

A. Triangle Inequality 

B. Minkowski Inequality 

C. Cauchy-Schwarz Inequality 

D. Holder’s Inequality  

18. The principal argument of any complex number can not be: 

A. 7π/8 

B. 7π/6 

C. π/2 

D. − π/2 

19. If |z| = 2i(1 − i)(2 − 4i)(3 + i), then |z| equals: 

A. 20 

B. −20 

C. 40 

D. −40 

20. z = a + ib is pure imaginary if and only if: 

A. z = −z̅

B. z = z

C. z = −z 

D. z = z^−1 

See also  KIPS Biology MDCAT Key Book PDF Download 2022
 
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