Physics Vactors And Equilibrium Online Mcqs Test

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Question 1

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

Answer

Same direction, different magnitude

Answer

Same magnitude and direction

Answer

Perpendicular

Answer

Opposite direction

Question 2

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

Answer

A unit vector

Answer

Vector of same direction

Answer

Product of their magnitudes

Question 3

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

Answer

It gives a vector as result

Answer

It results in a scalar quantity

Answer

It is affected by the direction only

Answer

It is equal to AB sin θ

Question 4

4. Which of these equations represents a zero resultant?

Question 5

5. What is the unit of scalar product?

Answer

Newton-meter²

Question 6

6. What does the dot product represent geometrically?

Answer

Perpendicular height

Answer

Shadow/projection

Question 7

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

Answer

Displacement

Question 8

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

Answer

Equal to scalar product

Question 9

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

Answer

No direction involved

Answer

Commutative

Answer

Always zero

Answer

Non-commutative

Question 10

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

Question 11

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

Answer

cos⁻¹(Rx/Ry)

Answer

sin⁻¹(Rx/Ry)

Answer

tan⁻¹(Rx/Ry)

Answer

tan⁻¹(Ry/Rx)

Question 12

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

Question 13

13. Which of these equations represents a zero resultant?

Question 14

14. Which of the following best defines vector product?

Answer

A·B = AB cos θ

Answer

A × B = AB sin θ n̂

Answer

A·B = AB sin θ

Answer

A × B = AB cos θ

Question 15

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

Question 16

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

Question 17

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

Answer

Vectors at 90°

Answer

Vectors at 45°

Answer

Vectors at 0°

Answer

Vectors at 180°

Question 18

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

Answer

Perpendicular

Question 19

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

Answer

Scalar multiplication by –1

Answer

Taking dot product

Answer

Adding zero vector

Answer

Multiplying by scalar 1

Question 20

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

Question 21

21. Which is not a characteristic of scalar product?

Answer

Commutative

Answer

Results in scalar

Answer

Directional

Answer

Depends on cosine of angle

Question 22

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

Question 23

23. Which of the following results in a scalar?

Answer

Displacement + displacement

Answer

Acceleration × velocity

Answer

Velocity × time

Answer

Force × distance (same direction)

Question 24

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

Question 25

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

Answer

Opposite direction

Answer

Perpendicular

Answer

Same magnitude and direction

Answer

Same direction, different magnitude

Question 26

26. 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 27

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

Question 28

28. Which of the following represents a unit vector?

Answer

î + 2ĵ

Answer

(1/√2)î + (1/√2)ĵ

Question 29

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

Answer

Perpendicular

Question 30

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

Question 31

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

Answer

Dot product

Answer

Cross product

Answer

Subtraction

Question 32

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

Question 33

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

Answer

AB sin 0° = 0

Question 34

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

Question 35

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

Answer

tan⁻¹(Ry/Rx)

Answer

tan⁻¹(Rx/Ry)

Answer

sin⁻¹(Rx/Ry)

Answer

cos⁻¹(Rx/Ry)

Question 36

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

Answer

They are perpendicular

Answer

They are anti-parallel

Answer

They form an angle of 60°

Answer

They are parallel

Question 37

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

Question 38

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

Answer

AB sin 0° = 0

Question 39

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

Answer

Newton-meter

Question 40

40. Which is not a characteristic of scalar product?

Answer

Depends on cosine of angle

Answer

Commutative

Answer

Results in scalar

Answer

Directional

Question 41

41. Which one is NOT a vector?

Answer

Displacement

Question 42

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

Answer

A·B = AB cos θ

Question 43

43. Which physical quantity is calculated using scalar product?

Answer

Angular momentum

Answer

Magnetic force

Question 44

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

Answer

Cosine law

Answer

Right-hand rule

Answer

Vector addition

Answer

Left-hand rule

Question 45

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

Question 46

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

Answer

Cosine law

Answer

Left-hand rule

Answer

Vector addition

Answer

Right-hand rule

Question 47

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

Question 48

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

Answer

Pythagoras theorem

Answer

Law of cosines

Answer

Law of sines

Answer

Ohm’s law

Question 49

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

Answer

Adding zero vector

Answer

Multiplying by scalar 1

Answer

Taking dot product

Answer

Scalar multiplication by –1

Question 50

50. 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 51

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

Question 52

52. What does the dot product represent geometrically?

Answer

Perpendicular height

Answer

Shadow/projection

Question 53

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

Question 54

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

Answer

Perpendicular

Question 55

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

Question 56

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

Question 57

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

Answer

Negative maximum

Answer

Positive maximum

Question 58

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

Answer

Newton’s law

Answer

Cosine law

Answer

Triangle law

Answer

Pythagorean theorem

Question 59

59. Which of the following represents a unit vector?

Answer

î + 2ĵ

Answer

(1/√2)î + (1/√2)ĵ

Question 60

60. Which property holds true for vector product?

Answer

A × B = –B × A

Answer

A × B = B × A

Answer

A × B = A·B

Answer

A × B = 0

Question 61

61. Which one is NOT a vector?

Answer

Displacement

Question 62

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

Question 63

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

Answer

Rectangular components method

Answer

Polygon method

Answer

Parallelogram law

Answer

Triangle law

Question 64

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

Answer 119

Scalar product

Answer 120

Addition of scalars

Answer 121

Cross product

Answer 122

10 sin 30°

Answer 123

10 cos 30°

Answer 124

A × B = A·B

Answer 125

A × B = 0

Answer 126

A × B = –B × A

Answer 127

A × B = B × A

Answer 128

Tangent θ

Answer 129

Direction only

Answer 130

Perpendicular

Answer 131

Newton-meter

Answer 132

Tangent θ

Answer 133

Direction only

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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