Physics Vactors And Equilibrium Online Mcqs Test

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Question 1

1. In rectangular component method, y-component of vector A is:

Question 2

2. The scalar product of two unit vectors is maximum when the angle between them is:

Question 3

3. What does the dot product represent geometrically?

Answer

Shadow/projection

Answer

Perpendicular height

Question 4

4. Which of the following represents a unit vector?

Answer

(1/√2)î + (1/√2)ĵ

Answer

î + 2ĵ

Question 5

5. Which is not a characteristic of scalar product?

Answer

Directional

Answer

Depends on cosine of angle

Answer

Results in scalar

Answer

Commutative

Question 6

6. If A and B are vectors, and θ is the angle between them, then scalar product depends on:

Answer

Tangent θ

Answer

Direction only

Question 7

7. Which one is NOT a vector?

Answer

Displacement

Question 8

8. Which of the following pairs of vectors are anti-parallel?

Answer

Same magnitude and direction

Answer

Same direction, different magnitude

Answer

Opposite direction

Answer

Perpendicular

Question 9

9. Which of the following is a method to add two vectors using their components?

Answer

Polygon method

Answer

Parallelogram law

Answer

Rectangular components method

Answer

Triangle law

Question 10

10. In terms of unit vectors, î × î =

Question 11

11. Which of the following is true about scalar product?

Answer

It is equal to AB sin θ

Answer

It gives a vector as result

Answer

It is affected by the direction only

Answer

It results in a scalar quantity

Question 12

12. If A = 2î and B = 3ĵ, what is A × B?

Question 13

13. Which of these equations represents a zero resultant?

Question 14

14. In equilibrium, the resultant of all vectors acting on a body is:

Question 15

15. If A = 2î and B = 3ĵ, what is A × B?

Question 16

16. Which law is used in the rectangular component method?

Answer

Ohm’s law

Answer

Law of cosines

Answer

Law of sines

Answer

Pythagoras theorem

Question 17

17. Which of the following pairs of vectors are anti-parallel?

Answer

Opposite direction

Answer

Same direction, different magnitude

Answer

Same magnitude and direction

Answer

Perpendicular

Question 18

18. The scalar product of two unit vectors is maximum when the angle between them is:

Question 19

19. What is the angle between two vectors if their scalar product is zero?

Question 20

20. If |A| = 5, |B| = 3, and the angle between them is 90°, what is |A × B|?

Question 21

21. Which of the following operations can change the direction of a vector?

Answer

Taking dot product

Answer

Multiplying by scalar 1

Answer

Adding zero vector

Answer

Scalar multiplication by –1

Question 22

22. Which one is NOT a vector?

Answer

Displacement

Question 23

23. Which is not a characteristic of scalar product?

Answer

Results in scalar

Answer

Commutative

Answer

Depends on cosine of angle

Answer

Directional

Question 24

24. In rectangular components, the resultant R = √(Rx² + Ry²) is based on:

Answer

Cosine law

Answer

Pythagorean theorem

Answer

Newton’s law

Answer

Triangle law

Question 25

25. The angle between A and B is 180°. What is A·B?

Answer

Negative maximum

Answer

Positive maximum

Question 26

26. Which trigonometric function appears in the formula for the scalar product?

Question 27

27. The cross product of î and ĵ is:

Question 28

28. Which of the following determines direction of vector product?

Answer

Right-hand rule

Answer

Vector addition

Answer

Left-hand rule

Answer

Cosine law

Question 29

29. What is the x-component of a vector of magnitude 10 units making 30° with the x-axis?

Answer

10 cos 30°

Answer

10 sin 30°

Question 30

30. Which of the following quantities is a result of a cross product?

Answer

Displacement

Question 31

31. If vector A = 3i + 4j, its magnitude is:

Question 32

32. If A = 4î + 3ĵ and B = 2î + ĵ, then A·B equals:

Question 33

33. Which trigonometric function appears in the formula for the scalar product?

Question 34

34. Which of the following results in a scalar?

Answer

Displacement + displacement

Answer

Velocity × time

Answer

Acceleration × velocity

Answer

Force × distance (same direction)

Question 35

35. Which mathematical operation gives a vector?

Answer

Scalar product

Answer

Addition of scalars

Answer

Cross product

Question 36

36. Which of the following determines direction of vector product?

Answer

Cosine law

Answer

Right-hand rule

Answer

Left-hand rule

Answer

Vector addition

Question 37

37. Which of these equations represents a zero resultant?

Question 38

38. If |A| = 5, |B| = 3, and the angle between them is 90°, what is |A × B|?

Question 39

39. The angle between A = î and B = ĵ is:

Question 40

40. Which of the following is a correct unit for vector product result?

Answer

Newton-meter

Question 41

41. Which physical quantity is calculated using scalar product?

Answer

Magnetic force

Answer

Angular momentum

Question 42

42. Which of the following represents a unit vector?

Answer

(1/√2)î + (1/√2)ĵ

Answer

î + 2ĵ

Question 43

43. In rectangular components, the resultant R = √(Rx² + Ry²) is based on:

Answer

Cosine law

Answer

Newton’s law

Answer

Triangle law

Answer

Pythagorean theorem

Question 44

44. Which of the following is a correct expression for scalar product?

Answer

A·B = AB cos θ

Question 45

45. Which of the following vectors is perpendicular to both î and ĵ?

Question 46

46. Which of the following gives the direction (angle) of the resultant vector?

Answer

cos⁻¹(Rx/Ry)

Answer

tan⁻¹(Rx/Ry)

Answer

tan⁻¹(Ry/Rx)

Answer

sin⁻¹(Rx/Ry)

Question 47

47. What is the direction of the vector product of two vectors?

Answer

Opposite to both vectors

Answer

In the plane of the vectors

Answer

Perpendicular to both vectors

Answer

Along one of the vectors

Question 48

48. If two vectors are parallel, their vector product is:

Answer

Equal to scalar product

Question 49

49. Which property holds true for vector product?

Answer

A × B = B × A

Answer

A × B = 0

Answer

A × B = –B × A

Answer

A × B = A·B

Question 50

50. What is the unit of scalar product?

Answer

Newton-meter²

Question 51

51. In equilibrium, the resultant of all vectors acting on a body is:

Question 52

52. Which of the following is a correct unit for vector product result?

Answer

Newton-meter

Question 53

53. When θ = 0°, what is the result of vector product A × B?

Answer

AB sin 0° = 0

Question 54

54. If vector A = 6î + 8ĵ, what is its magnitude?

Question 55

55. The angle between A = î and B = ĵ is:

Question 56

56. When θ = 0°, what is the result of vector product A × B?

Answer

AB sin 0° = 0

Question 57

57. Which vector operation is used in finding magnetic force?

Answer

Dot product

Answer

Subtraction

Answer

Cross product

Question 58

58. Which of the following combinations results in maximum scalar product?

Answer

Vectors at 0°

Answer

Vectors at 180°

Answer

Vectors at 90°

Answer

Vectors at 45°

Question 59

59. What is the scalar product of two perpendicular vectors?

Question 60

60. Which property holds true for vector product?

Answer

A × B = A·B

Answer

A × B = –B × A

Answer

A × B = B × A

Answer

A × B = 0

Question 61

61. Which of the following best defines vector product?

Answer

A·B = AB sin θ

Answer

A × B = AB sin θ n̂

Answer

A·B = AB cos θ

Answer

A × B = AB cos θ

Question 62

62. If vector A = 6î + 8ĵ, what is its magnitude?

Question 63

63. The dot product of two vectors is maximum when:

Answer

They are parallel

Answer

They are perpendicular

Answer

They form an angle of 60°

Answer

They are anti-parallel

Question 64

64. Which of the following vectors is perpendicular to both î and ĵ?

Answer 111

Tangent θ

Answer 112

Direction only

Answer 113

Perpendicular height

Answer 114

Shadow/projection

Answer 115

Product of their magnitudes

Answer 116

A unit vector

Answer 117

Vector of same direction

Answer 118

Perpendicular

Answer 119

Perpendicular

Answer 120

No direction involved

Answer 121

Non-commutative

Answer 122

Commutative

Answer 123

Always zero

Answer 124

Perpendicular

Answer 125

Perpendicular

Answer 126

Multiplying by scalar 1

Answer 127

Taking dot product

Answer 128

Adding zero vector

Answer 129

Scalar multiplication by –1

Answer 130

sin⁻¹(Rx/Ry)

Answer 131

tan⁻¹(Rx/Ry)

Answer 132

cos⁻¹(Rx/Ry)

Answer 133

tan⁻¹(Ry/Rx)

Total Questions:	75
Time Allowed:	35 Minutes
Total Marks:	75
How to Attempt Test:	Please choose the right Option in MCQ-type question.
Test Helpful For:	Physics Test ECAT Test MDCAT Test FPSC/PPSC/SPSC/KPPSC/BPSC/AJKPSC/NTS Physics Interview Question Answer

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Key Preparation Tips:

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Malik Tahir

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