Hssc i objective ch 1 no 2
- 1. PAKTURK Success is a ladder you cannot climb with your hands in your pockets 1 For more news and updates visit pakturkmaths.com CLASS XI For any question mail us at info@pakturkmaths.com Composed by Engin Baştürk FEDERAL BOARD TYPE Objective Number System No 2 Q1: Every real number is also a ............. A) Natural Number B) Complex Number C) Rational Number D) Whole Number Q2: If z a bi then z is: A) a ib B) a ib C) a ib D) 2 2 a b Q3: If z a ib , then z a ib is called …...... of z A) Root B) Inverse C) Conjugate D) Identity Q4: The complex number "a "i is called purely: A) Real B) Complex C) imaginary D) None Q5: z is same with …………… A) z B) z C) z D) z Q6: If a+ bz i , then z ________ A) 2 2 a b B) 2 2 a b C) a b D) None of these Q7: If z a bi then z A) 2 2 a b B) 2 2 a b C) 2 2 a b D) 2 2 a b Q8: Find the modulus of 3 4i A) 5 B) 5 C) 5 D) 5 Q9: If 7 2z i then z A) 53 B) 53 C) 53 D) 45 Q10: If 1 5 4z i and 2 5 2z i then 1 2 ...........z z A) 4i B) 10 C) 10 D) 2i
- 2. PAKTURK Success is a ladder you cannot climb with your hands in your pockets 2 Q11: Which of the following is equal to 2 z A) 2 z B) .z z C) 2 z D) z Q12: 81 16 is equal to ……… A) 5i B) 5i C) 13i D) 12i Q13: 64 100 is equal to ……… A) 2i B) 2i C) 18i D) 18i Q14: 12 144 is equal to ……… A) 12 2 3i B) 12 2 3i C) 12 2 3i D) 12 4 3i Q15: The polar form of a complex number is …. A) tan cotr i B) sin cosr i C) sec cscr i D) sec cscr i Q16: 1 3 ........ 2 2 i A) 3 B) 1 C) 2 D) 0 Q17: 2 ............ 1 i A) 1 i B) 1 i C) 2 1 i D) 2 1 i Q18: 7 5 is …….. A) 7 5 i i B) 7 5 C) 7 5 i D) None of these Q19: The additive identity in Complex numbers is: A) 0,0 B) 1,1 C) 1,0 D) 0,1 Q20: In terms of i , 3 ______. A) 3i B) 3i C) 3i D) 3i Answer Key 1 2 3 4 5 6 7 8 9 10 B A C C C B B A A D 11 12 13 14 15 16 17 18 19 20 B A B A B B A C C B