Physics Vactors And Equilibrium Online Mcqs Test

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Question 1

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

Answer

Perpendicular

Question 2

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

Answer

Dot product

Answer

Subtraction

Answer

Cross product

Question 3

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

Answer

Vectors at 90°

Answer

Vectors at 45°

Answer

Vectors at 180°

Answer

Vectors at 0°

Question 4

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

Answer

Negative maximum

Answer

Positive maximum

Question 5

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

Question 6

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

Question 7

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

Answer

In the plane of the vectors

Answer

Along one of the vectors

Answer

Opposite to both vectors

Answer

Perpendicular to both vectors

Question 8

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

Answer

Perpendicular

Question 9

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

Answer

Adding zero vector

Answer

Scalar multiplication by –1

Answer

Multiplying by scalar 1

Answer

Taking dot product

Question 10

10. Which of the following results in a scalar?

Answer

Displacement + displacement

Answer

Acceleration × velocity

Answer

Force × distance (same direction)

Answer

Velocity × time

Question 11

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

Answer

Ohm’s law

Answer

Pythagoras theorem

Answer

Law of sines

Answer

Law of cosines

Question 12

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

Question 13

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

Answer

Cosine law

Answer

Triangle law

Answer

Pythagorean theorem

Answer

Newton’s law

Question 14

14. Which mathematical operation gives a vector?

Answer

Addition of scalars

Answer

Scalar product

Answer

Cross product

Question 15

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

Answer

Taking dot product

Answer

Scalar multiplication by –1

Answer

Adding zero vector

Answer

Multiplying by scalar 1

Question 16

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

Question 17

17. The cross product of î and ĵ is:

Question 18

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

Answer

It is equal to AB sin θ

Answer

It results in a scalar quantity

Answer

It is affected by the direction only

Answer

It gives a vector as result

Question 19

19. 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 20

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

Question 21

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

Answer

Displacement

Question 22

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

Question 23

23. 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 24

24. Which physical quantity is calculated using scalar product?

Answer

Angular momentum

Answer

Magnetic force

Question 25

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

Question 26

26. 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 27

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

Answer

Equal to scalar product

Question 28

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

Answer

They form an angle of 60°

Answer

They are perpendicular

Answer

They are parallel

Answer

They are anti-parallel

Question 29

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

Answer

Left-hand rule

Answer

Vector addition

Answer

Right-hand rule

Answer

Cosine law

Question 30

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

Question 31

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

Answer

AB sin 0° = 0

Question 32

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

Answer

A·B = AB cos θ

Question 33

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

Question 34

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

Question 35

35. Which of the following best defines vector product?

Answer

A × B = AB sin θ n̂

Answer

A × B = AB cos θ

Answer

A·B = AB cos θ

Answer

A·B = AB sin θ

Question 36

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

Question 37

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

Question 38

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

Question 39

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

Question 40

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

Answer

Non-commutative

Answer

No direction involved

Answer

Commutative

Answer

Always zero

Question 41

41. What does the dot product represent geometrically?

Answer

Perpendicular height

Answer

Shadow/projection

Question 42

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

Answer

tan⁻¹(Rx/Ry)

Answer

sin⁻¹(Rx/Ry)

Answer

tan⁻¹(Ry/Rx)

Answer

cos⁻¹(Rx/Ry)

Question 43

43. Which of the following represents a unit vector?

Answer

(1/√2)î + (1/√2)ĵ

Answer

î + 2ĵ

Question 44

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

Question 45

45. Which of these equations represents a zero resultant?

Question 46

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

Answer

Same direction, different magnitude

Answer

Perpendicular

Answer

Opposite direction

Answer

Same magnitude and direction

Question 47

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

Answer

Perpendicular

Question 48

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

Answer

Newton-meter

Question 49

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

Answer

10 sin 30°

Answer

10 cos 30°

Question 50

50. Which of the following represents a unit vector?

Answer

(1/√2)î + (1/√2)ĵ

Answer

î + 2ĵ

Question 51

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

Question 52

52. 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 53

53. Which one is NOT a vector?

Answer

Displacement

Question 54

54. 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 55

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

Question 56

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

Question 57

57. Which is not a characteristic of scalar product?

Answer

Commutative

Answer

Directional

Answer

Depends on cosine of angle

Answer

Results in scalar

Question 58

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

Answer

Right-hand rule

Answer

Cosine law

Answer

Vector addition

Answer

Left-hand rule

Question 59

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

Answer

Perpendicular

Question 60

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

Answer

Newton-meter

Question 61

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

Answer

tan⁻¹(Rx/Ry)

Answer

tan⁻¹(Ry/Rx)

Answer

cos⁻¹(Rx/Ry)

Answer

sin⁻¹(Rx/Ry)

Question 62

62. Which is not a characteristic of scalar product?

Answer

Depends on cosine of angle

Answer

Commutative

Answer

Directional

Answer

Results in scalar

Question 63

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

Question 64

64. What is the unit of scalar product?

Answer

Newton-meter²

Answer 119

A × B = A·B

Answer 120

A × B = 0

Answer 121

A × B = –B × A

Answer 122

A × B = B × A

Answer 123

Perpendicular height

Answer 124

Shadow/projection

Answer 125

AB sin 0° = 0

Answer 126

Product of their magnitudes

Answer 127

Vector of same direction

Answer 128

A unit vector

Answer 129

Displacement

Answer 130

Same direction, different magnitude

Answer 131

Opposite direction

Answer 132

Perpendicular

Answer 133

Same magnitude and 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

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Malik Tahir

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