Hssc i objective ch 4 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 Quadratic Equations No 2 Q1: 1, 1, ,i i is called....................... A) The cube roots of unity B) The fourth roots of unity C) The fifth roots of unity D) None of these Q2: Which of the following is false? A) The complex fourth roots of unity are conjugate of each other B) The real fourth roots of unity are inverse of each other C) Sum of all the four fourth roots of unity is zero D) Product of all the fourth roots of unity is 1 Q3: Product of all the fourth roots of unity is equal to ............. A) 1 B) i C) 1 D) i Q4: Find the solution set of 2 1 0x A) 1, 1 B) 0, 1 C) 1,0 D) ,i i Q5: Find the solution set of 2 1 0x A) 1, 1 B) 0, 1 C) 1,0 D) ,i i Q6: Evaluate 82 1 A) 256 B) 128 C) 256 D) 128 Q7: Evaluate 28 29 1 A) 1 B) 0 C) D) 2 Q8: Evaluate 2 2 1 1 A) 4 B) 4 C) 4 D) 4 Q9: Evaluate 7 7 1 3 1 3 2 2 A) B) C) 1 D) 1 Q10: Evaluate 5 5 1 3 1 3 A) 32 B) 32 C) 32 D) 32
- 2. PAKTURK Success is a ladder you cannot climb with your hands in your pockets 2 Q11: The highest power of a polynomial function is called ..... A) Degree B) Power C) Monomial D) Binomial Q12: What is the sum of roots of 4 1 0x A) 1 B) 2 2i C) 0 D) 2 Q13: What is the sum of roots of 3 1 0x A) 1 B) 2 C) 0 D) 2 3 Q14: What is the product of roots of 3 1 0x A) 1 B) 2 C) 0 D) 2 3 Q15: What is the sum of real roots of 4 16 0x A) 1 B) 1 C) 0 D) 2 3 Q16: 2 ............. A) 0 B) 1 C) 1 D) Q17: Find the remainder when 3 2 2 4 0x x x is divided by 1x A) 1 B) 2 C) 2 D) 0 Q18: Find the numerical value of k if 3 2 2 6 0x x kx has a remainder of12, when divided by 1x A) 1 B) 2 C) 4 D) 0 Q19: If 2 0ax bx c and 2 4 0b ac then the roots will be.................... A) real and equal B) complex and equal C) real and unequal D) complex and unequal Q20: If 2 0ax bx c and 2 4 0b ac and not a perfect number, then the roots will be.................... A) real and equal B) complex and equal C) real and unequal D) complex and unequal Answer Key 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20