11th Class FSC Mathematics Chapter 1 Test Online With Answers

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11th Class FSC Mathematics Chapter 1 Test Online

Sr. # Questions Answers Choice
1 0 i -i 1
2 If z = x + i y = r (cos Θ + i sin Θ), then arg z is: tan Θ cos<sup>2</sup>Θ + sin<sup>2</sup>Θ r Θ
3 Factors of x2 + y2 are: (x + iy) (x - iy) (x + y) (x - y) (x + y) (x + y) none
4 Which of the following is correct: 2 + 7i &gt; 10 + i 1 + i &gt; 1 - i 4 + 3i &gt; 1 + 3i none of these
5 i 0
6 x = 0, y = 0
7 z is purely real z is any complex number z is purely imaginary real part of z = imaginary part of z
8 Modulus of 15 i + 20 is: 20 15 25 none of the above
9 The multiplicative identity of real numbers is: 0 1 2 -1
10 Multiplicative inverse of -i is: i -i 1 -1
11 The multiplicative invers of a non-zero real number a is: 0 -a a
12 The additive inverse of a real number is a: 0 -a a
13 The identity element with respect to addition is: 0 1 -1 0 and 1
14 If z1 = 4i and z2 = 3 - 9i, then z1 + z2 = 3 - 5i 3i - 5 7 - 9i 3 + 5i
15 Every real number is also a/an: integer rational number irrationalnumber complexnumber
16 i2 + 1 = -1 0 i 1
17 Conjugate of -3 -2 i is: 3 + 2i -3 + 2i 2 + 3i -2 + 3i
18 Conjugate of a- i b is: b + ia -a + ib -a - ib a + ib
19 Conjugate of a + i b is: -a + ib a + ib -a - ib a - ib
20 Conjugate of complex number (-a, -b) is: (-a, b) (-a, -b) (a, -b) none of these
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