Vectors and scalars - One Line Questions

1. If a vector is represented as a position vector from the origin to a point P(x, y, z), its components are: — (x, y, z)
2. The magnitude of a vector v = (vx, vy, vz) is given by: — |v| = √(vx² + vy² + vz²)
3. The magnitude of a vector A = -2î + 3ĵ is: — √13
4. The magnitude of the null vector is: — 0
5. If vector A = 3î + 4ĵ, its magnitude is: — 5
6. A vector quantity always has: — A direction
7. Which of the following represents a position vector? — A vector from the origin to a point (x, y, z)
8. The magnitude of a vector is always: — A positive number or zero
9. A vector can be represented geometrically as: — A line segment with direction
10. A vector having both magnitude and direction is: — A vector
11. A vector having only magnitude and no direction is: — A scalar
12. The direction cosines of a vector v = aî + bĵ + ck̂ are: — a/|v|, b/|v|, c/|v|
13. The vector representing the displacement from point A to point B is denoted as: — AB
14. For any vector v, the magnitude |v| is: — Always positive
15. Which of the following is a scalar quantity? — Electric current
16. Which of the following is a scalar quantity? — Speed
17. The scalar product of two vectors is also known as the: — Dot product
18. Which of the following is a vector quantity? — Velocity
19. A vector that represents the position of a point with respect to a fixed origin is called a: — Position vector
20. A vector that points from the origin to a point P is called a: — Position vector
21. The vector product of two vectors is also known as the: — Cross product
22. Which of the following is a scalar quantity? — Electric potential
23. Which of the following is a vector quantity? — Magnetic field
24. Which of the following is NOT a unit vector? — 2î
25. What defines a scalar quantity? — It has only magnitude.
26. What defines a vector quantity? — It has both magnitude and direction.
27. The direction of a vector can be represented by: — A unit vector in the same direction
28. Which of the following units represents a vector quantity? — Meters per second (m/s)
29. The direction of a vector can be specified using: — Magnitude and two angles (e.g., direction cosines)
30. Which of the following is a vector quantity? — Displacement
31. Which of the following units represents a scalar quantity? — Kilograms (kg)
32. If two vectors have the same magnitude and are in the same direction, they are: — Equal vectors
33. The quantity 'Energy' is a: — Scalar
34. The quantity 'Force' is a: — Vector
35. Which of the following is a vector quantity? — Acceleration
36. Which of the following is a vector quantity representing the rate of change of velocity? — Acceleration
37. Two vectors are equal if they have: — The same magnitude and the same direction
38. Which physical quantity is represented by a vector? — Momentum
39. Which of the following is a scalar quantity? — Work
40. If a vector has magnitude 5 and direction given by the unit vector û, the vector is: — 5û
41. If a vector has zero magnitude, it is called a: — Null vector
42. A vector whose direction is opposite to a given vector is called a: — Negative vector
43. If a vector's components are (0, 0, 0), it is a: — Null vector
44. Which of the following quantities is a scalar quantity? — Mass
45. Which physical quantity is represented by a scalar? — Pressure
46. Which of the following is a scalar quantity? — Speed
47. A vector representing the change in position is called: — Displacement vector
48. The scalar quantity that represents the 'amount of matter' in an object is: — Mass
49. Which of the following is a vector quantity? — Impulse
50. The direction of a vector given by v = aî + bĵ is along the line: — y = (b/a)x
All One Line Questions
E-Book Vectors and scalars Audio Book Vectors and scalars Online Test Vectors and scalars Question Bank Vectors and scalars