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In Argand diagram, O, P, Q represent the...

In Argand diagram, O, P, Q represent the origin, z and z+ iz respectively then `angle OPQ`=

A

`pi/4`

B

`pi/3`

C

`pi/2`

D

`(2pi)/3`

Text Solution

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The correct Answer is:
c
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OBJECTIVE RD SHARMA-COMPLEX NUMBERS -Chapter Test
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  3. In Argand diagram, O, P, Q represent the origin, z and z+ iz respectiv...

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  4. If (2z(1))/(3z(2)) is purely imaginary number, then |(z(1)-z(2))/(z(1)...

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  5. If omega is a cube root of unity then find the value of sin((omega^(10...

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  6. If center of a regular hexagon is at the origin and one of the vertice...

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  7. If z^(2)+(p+iq)z+(r+is)=0, where,p,q,r,s are non-zero, has real roots...

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  8. Let z1, z2, z3 be three vertices of an equilateral triangle circumscri...

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  9. If omega is the complex cube root of unity, then the value of omega+om...

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  10. the locus of z=i+2exp(i(theta+pi/4)) is

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  11. If z lies on the circle |z-1|=1, then (z-2)/z is

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  12. If a gt 0 and the equation |z-a^(2)|+|z-2a|=3, represents an ellipse, ...

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  13. For any complex number z , find the minimum value of |z|+|z-2i|dot

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  14. Find the greatest and the least value of |z1+z2| ifz1=24+7ia n d|z2|=6...

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  15. For all complex numbers z1, z2 satisfying |z1| =12 and |z2-3-4i|=5, ...

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  16. If k gt 1, |z(1)| lt k and |(k-z(1)barz(2))/(z(1)-kz(2))|=1, then

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  17. If |z-i|=1 and arg (z) =theta where 0 lt theta lt pi/2, then cottheta-...

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  18. If Re(z)<0 then the value of (1+z+z^2+.....+z^n) cannot exceed

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  19. Let z(1),z(2),z(3) be three complex numbers satisfying 1/z(1)+1/z(2)+1...

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  20. a and b are real numbers between 0 and 1 such that the points z1 =a+ i...

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