SCALARS AND VECTORS MCQs 14 min Score: 0 Attempted: 0/14 Subscribe 1. . Which of the following is a scalar quantity? (A) Energy (B) Velocity (C) Force (D) TorqueShow All Answers 2. . Which one is the vector quantity? (A) Density (B) Length (C) Force (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) 30˚ (B) 60˚ (C) 90˚ (D) 180˚Show All Answers 5. . A force of 6N is acting along x–axis. Its y–component is (A) 6N (B) Zero (C) 12N (D) 3NShow All Answers 6. . Cos 60˚ has the value: (A) 1 (B) 0.866 (C) 0.5 (D) 0.707Show All Answers 7. . If a vector A makes an angle θ with x–axis, its x-component is given by (A) A Sinθ (B) A tanθ (C) A Cosθ (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 Cosθ (D) AB tanθShow 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) A (B) 1 (C) Zero (D) A²Show All Answers 12. . In a right angle triangle, if one of its angles is 30˚ then the other will have value (A) 0˚ (B) 30˚ (C) 60˚ (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 an example of (A) Vector (B) Scalar (C) Negative of a vector (D) Null vectorShow All Answers
