SCALARS AND VECTORS MCQs 14 min Score: 0 Attempted: 0/14 Subscribe 1. . Which of the following is a scalar quantity? (A) Velocity (B) Energy (C) Force (D) TorqueShow All Answers 2. . Which one is the vector quantity? (A) Force (B) Length (C) Density (D) WorkShow All Answers 3. . A vector which has magnitude (one) is called (A) Null vector (B) Position vector (C) Unit vector (D) Negative vectorShow All Answers 4. . The angle between two rectangular components of a vector is (A) 90° (B) 60° (C) 30° (D) 180°Show All Answers 5. . A force of 6N is acting along x–axis. Its y–component is (A) 6N (B) 3N (C) 12N (D) ZeroShow All Answers 6. . Cos 60° has the value: (A) 1 (B) 0.866 (C) 0.707 (D) 0.5Show All Answers 7. . If a vector A makes an angle θ with x–axis, its x-component is given by (A) A Cosθ (B) A tanθ (C) A Sinθ (D) A CotθShow All Answers 8. . If two vectors make an angle of 90° with each other, their scalar product is: (A) 0 (B) 1 (C) 1 (D) 2Show All Answers 9. . The scalar product of two vectors A and B at an angle θ with each other is (A) AB (B) AB Sinθ (C) AB tanθ (D) AB CosθShow All Answers 10. . If vectors A and B are parallel to each other then (A) A · B = 0 (B) A · B = 1 (C) A · B = -AB (D) A · B = ABShow All Answers 11. . The cross product of vector A with itself (A × A) is (A) Zero (B) 1 (C) A (D) A²Show All Answers 12. . In a right angle triangle, if one of its angle is 30° then the other will have value (A) 0° (B) 60° (C) 30° (D) 90°Show All Answers 13. . Which of these statements is correct? (A) A · B = – B · A (B) A · B = B · A (C) A × B = B × A (D) A · B ≠ B · AShow All Answers 14. . Time is example of (A) Vector (B) Negative of a vector (C) Scalar (D) Null vectorShow All Answers
