Home
Class 12
MATHS
The number of complex numbersd z, such t...

The number of complex numbersd z, such that `abs(z-1)=abs(z+1)=abs(z-i)`, where `i=sqrt(-1)` equals to

A

2

B

`infty`

C

0

D

1

Text Solution

Verified by Experts

The correct Answer is:
D

Clearly, z=0 satisfies
`|z-1|=|z+1|=|z-i|`
Hence, z takes only one value.
Promotional Banner

Topper's Solved these Questions

  • COMPLEX NUMBERS

    OBJECTIVE RD SHARMA ENGLISH|Exercise Section II - Assertion Reason Type|15 Videos
  • COMPLEX NUMBERS

    OBJECTIVE RD SHARMA ENGLISH|Exercise Exercise|129 Videos
  • COMPLEX NUMBERS

    OBJECTIVE RD SHARMA ENGLISH|Exercise Chapter Test|58 Videos
  • CIRCLES

    OBJECTIVE RD SHARMA ENGLISH|Exercise Chapter Test|53 Videos
  • CONTINUITY AND DIFFERENTIABILITY

    OBJECTIVE RD SHARMA ENGLISH|Exercise Exercise|87 Videos

Similar Questions

Explore conceptually related problems

The number of complex numbers z such that |z-1|=|z+1|=|z-i| is

Numbers of complex numbers z, such that abs(z)=1 and abs((z)/bar(z)+bar(z)/(z))=1 is

Consider the two complex numbers z and w, such that w=(z-1)/(z+2)=a+ib, " where " a,b in R " and " i=sqrt(-1). If z=CiStheta , which of the following does hold good?

For every real number c ge 0, find all complex numbers z which satisfy the equation abs(z)^(2)-2iz+2c(1+i)=0 , where i=sqrt(-1) and passing through (-1,4).

Let z be a complex number such that |z|+z=3+I (Where i=sqrt(-1)) Then ,|z| is equal to

bb"statement-1" " Let " z_(1),z_(2) " and " z_(3) be htree complex numbers, such that abs(3z_(1)+1)=abs(3z_(2)+1)=abs(3z_(3)+1) " and " 1+z_(1)+z_(2)+z_(3)=0, " then " z_(1),z_(2),z_(3) will represent vertices of an equilateral triangle on the complex plane. bb"statement-2" z_(1),z_(2),z_(3) represent vertices of an triangle, if z_(1)^(2)+z_(2)^(2)+z_(3)^(2)+z_(1)z_(2)+z_(2)z_(3)+z_(3)z_(1)=0

If z=i^(i^(i)) where i=sqrt-1 then |z| is equal to

Let z be a complex number satisfying |z-5i|<=1 such that amp(z) is minimum, then z is equal to

If the complex number z is to satisfy abs(z)=3, abs(z-{a(1+i)-i}) le 3 and abs(z+2a-(a+1)i) gt 3 , where i=sqrt(-1) simultaneously for atleast one z, then find all a in R .

If z is any complex number satisfying abs(z-3-2i) le 2 , where i=sqrt(-1) , then the minimum value of abs(2z-6+5i) , is

OBJECTIVE RD SHARMA ENGLISH-COMPLEX NUMBERS -Section I - Solved Mcqs
  1. If |omega|=2, then the set of points z=omega-1/omega is contained in o...

    Text Solution

    |

  2. If |omega|=1, then the set of points z=omega+1/omega is contained in o...

    Text Solution

    |

  3. The number of complex numbersd z, such that abs(z-1)=abs(z+1)=abs(z-i)...

    Text Solution

    |

  4. Let alpha and beta be real and z be a complex number. If z^(2)+az+beta...

    Text Solution

    |

  5. If omega=1 is the complex cube root of unity and matrix H=|{:(,omega,0...

    Text Solution

    |

  6. The maximum value of |a r g(1/(1-z))|for|z|=1,z!=1 is given by.

    Text Solution

    |

  7. about to only mathematics

    Text Solution

    |

  8. Let a,b and c be three real numbers satisfying [a b c ] |(1,9,7),(...

    Text Solution

    |

  9. The set {R e((2i z)/(1-z^2)): zi sacom p l e xnu m b e r ,|z|=1,z=+-1}...

    Text Solution

    |

  10. about to only mathematics

    Text Solution

    |

  11. If |z(1)|=|z(2)| and arg (z(1))+"arg"(z(2))=0, then

    Text Solution

    |

  12. Let complex numbers alpha and 1/alpha lies on circle (x-x0)^2+(y-y0)^2...

    Text Solution

    |

  13. about to only mathematics

    Text Solution

    |

  14. Let S=S1 nn S2 nn S3, where s1={z in C :|z|<4}, S2={z in C :ln[(z-...

    Text Solution

    |

  15. Let S=S1 nn S2 nn S3, where s1={z in C :|z|<4}, S2={z in C :ln[(z-...

    Text Solution

    |

  16. Let z(k)=cos(2kpi)/10+isin(2kpi)/10,k=1,2,………..,9. Then, 1/10{|1-z(1)|...

    Text Solution

    |

  17. In Q. No. 121, 1-sum(k=1)^(9)cos(2kpi)/10 equals

    Text Solution

    |

  18. If z is a complex number such that |z|geq2 , then the minimum value...

    Text Solution

    |

  19. A complex number z is said to be unimodular if abs(z)=1. Suppose z(1) ...

    Text Solution

    |

  20. about to only mathematics

    Text Solution

    |