Question # 1

Conjugate of complex number (-a, -b) is:

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(-a, b)

(-a, -b)

(a, -b)

none of these

The additive inverse of a real number is a:

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0

-a

a

π is defined as:

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ration of diameter of a circle to its circumference

ration of the circumference of a circle to its diameter

ration of area of a circle to its circumference

ration of the circumference of a circle to its area

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closureproperty

associativeproperty

commutativeproperty

trichotomyproperty

Conjugate of a- i b is:

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b + ia

-a + ib

-a - ib

a + ib

The real part of the complex number a + bi is:

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b

-b

a

-a

If z = x + i y = r (cos Θ + i sin Θ), then arg z is:

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tan Θ

cos²Θ + sin²Θ

r

Θ

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a + c = b + d

a + b = c + d

a - b = c - d

None of these

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additive property

multiplicative inverseproperty

transitive property

negative property

Which of the following is correct:

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2 + 7i > 10 + i

1 + i > 1 - i

4 + 3i > 1 + 3i

none of these

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11th Class Part 1 Mathematics Chapter 1 Test Online MCQs With Answers

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