Physics Vactors And Equilibrium Online Mcqs Test

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Question 1

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

Question 2

2. Which of these equations represents a zero resultant?

Question 3

3. 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 4

4. Which of the following is true for dot product?

Answer

Commutative

Answer

Non-commutative

Answer

Always zero

Answer

No direction involved

Question 5

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

Question 6

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

Question 7

7. Which physical quantity is calculated using scalar product?

Answer

Angular momentum

Answer

Magnetic force

Question 8

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

Answer

Perpendicular to both vectors

Answer

Along one of the vectors

Answer

Opposite to both vectors

Answer

In the plane of the vectors

Question 9

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

Answer

AB sin 0° = 0

Question 10

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

Answer

Vectors at 45°

Answer

Vectors at 0°

Answer

Vectors at 180°

Answer

Vectors at 90°

Question 11

11. If two non-zero vectors have a zero scalar product, they are:

Answer

Perpendicular

Question 12

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

Answer

AB sin 0° = 0

Question 13

13. Which is not a characteristic of scalar product?

Answer

Commutative

Answer

Directional

Answer

Depends on cosine of angle

Answer

Results in scalar

Question 14

14. What is the vector product of two vectors of equal magnitude and 90° angle?

Answer

Product of their magnitudes

Answer

A unit vector

Answer

Vector of same direction

Question 15

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

Answer

Scalar multiplication by –1

Answer

Multiplying by scalar 1

Answer

Adding zero vector

Answer

Taking dot product

Question 16

16. Which one is NOT a vector?

Answer

Displacement

Question 17

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

Question 18

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

Question 19

19. Which of these equations represents a zero resultant?

Question 20

20. What does the dot product represent geometrically?

Answer

Shadow/projection

Answer

Perpendicular height

Question 21

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

Question 22

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

Question 23

23. What is the unit of scalar product?

Answer

Newton-meter²

Question 24

24. What does the dot product represent geometrically?

Answer

Perpendicular height

Answer

Shadow/projection

Question 25

25. Which property holds true for vector product?

Answer

A × B = 0

Answer

A × B = –B × A

Answer

A × B = B × A

Answer

A × B = A·B

Question 26

26. Which of the following represents a unit vector?

Answer

î + 2ĵ

Answer

(1/√2)î + (1/√2)ĵ

Question 27

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

Answer

Newton-meter

Question 28

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

Question 29

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

Answer

Law of sines

Answer

Pythagoras theorem

Answer

Law of cosines

Answer

Ohm’s law

Question 30

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

Answer

It is affected by the direction only

Answer

It results in a scalar quantity

Answer

It is equal to AB sin θ

Answer

It gives a vector as result

Question 31

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

Question 32

32. 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 33

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

Answer

Pythagorean theorem

Answer

Cosine law

Answer

Newton’s law

Answer

Triangle law

Question 34

34. 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 35

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

Question 36

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

Question 37

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

Answer

Cosine law

Answer

Vector addition

Answer

Right-hand rule

Answer

Left-hand rule

Question 38

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

Answer

Newton’s law

Answer

Triangle law

Answer

Pythagorean theorem

Answer

Cosine law

Question 39

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

Answer

tan⁻¹(Ry/Rx)

Answer

cos⁻¹(Rx/Ry)

Answer

sin⁻¹(Rx/Ry)

Answer

tan⁻¹(Rx/Ry)

Question 40

40. Which property holds true for vector product?

Answer

A × B = A·B

Answer

A × B = B × A

Answer

A × B = 0

Answer

A × B = –B × A

Question 41

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

Question 42

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

Answer

Positive maximum

Answer

Negative maximum

Question 43

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

Answer

Displacement

Question 44

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

Answer

Parallelogram law

Answer

Triangle law

Answer

Polygon method

Answer

Rectangular components method

Question 45

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

Question 46

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

Question 47

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

Question 48

48. If two non-zero vectors have a zero scalar product, they are:

Answer

Perpendicular

Question 49

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

Answer

Equal to scalar product

Question 50

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

Question 51

51. Work done is maximum when the force and displacement are:

Answer

Perpendicular

Question 52

52. Which of the following represents a unit vector?

Answer

(1/√2)î + (1/√2)ĵ

Answer

î + 2ĵ

Question 53

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

Answer

A·B = AB cos θ

Question 54

54. Which is not a characteristic of scalar product?

Answer

Depends on cosine of angle

Answer

Directional

Answer

Results in scalar

Answer

Commutative

Question 55

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

Answer

Perpendicular

Answer

Opposite direction

Answer

Same direction, different magnitude

Answer

Same magnitude and direction

Question 56

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

Answer

Right-hand rule

Answer

Cosine law

Answer

Left-hand rule

Answer

Vector addition

Question 57

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

Question 58

58. Which of the following best defines vector product?

Answer

A·B = AB cos θ

Answer

A·B = AB sin θ

Answer

A × B = AB cos θ

Answer

A × B = AB sin θ n̂

Question 59

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

Answer

They are parallel

Answer

They are anti-parallel

Answer

They are perpendicular

Answer

They form an angle of 60°

Question 60

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

Answer

Newton-meter

Question 61

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

Question 62

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

Question 63

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

Question 64

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

Answer

Cross product

Answer

Dot product

Answer

Subtraction

Answer 113

Displacement

Answer 114

Displacement + displacement

Answer 115

Acceleration × velocity

Answer 116

Force × distance (same direction)

Answer 117

Velocity × time

Answer 118

Addition of scalars

Answer 119

Scalar product

Answer 120

Cross product

Answer 121

Perpendicular

Answer 122

cos⁻¹(Rx/Ry)

Answer 123

sin⁻¹(Rx/Ry)

Answer 124

tan⁻¹(Ry/Rx)

Answer 125

tan⁻¹(Rx/Ry)

Answer 126

Adding zero vector

Answer 127

Taking dot product

Answer 128

Multiplying by scalar 1

Answer 129

Scalar multiplication by –1

Answer 130

Same direction, different magnitude

Answer 131

Same magnitude and direction

Answer 132

Perpendicular

Answer 133

Opposite direction

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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Malik Tahir

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Important Vactors And Equilibrium Question and Answer

Physics Vactors And Equilibrium Practice Test Online With Explanation

How to Score High in Physics Vactors And Equilibrium Online Mcqs Test?

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Malik Tahir

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