Vectors and Equilibrium MCQs

Vectors and Equilibrium MCQs. The given Multiple-Choice Questions (MCQs) with answers of Physics Part 1, FSc. | ICS Chapter No.2: Vectors and Equilibrium are important and more conceptual for the exams, entry tests i.e., ECAT and MDCAT, and also imperative for interview of jobs.

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➤ Measurements - MCQs-1
➤ Measurements - MCQs-2
➤ Measurements - MCQs-3
➤ Measurements - Short Questions-I
➤ Measurements - Short Questions-2

Chapter No.2: 

Vectors and Equilibrium 
Online MCQs Test - 1

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1. When a vector `\vec{A}` is multiplied by a negative number then its direction?
   1.   Does not change
   2.   None of these
   3.   Remains same
   4.   Changed by `180^\circ`
2. Unit vector of a vector `\vec{A}` describes?
   1.   Magnitude of a given vector
   2.   Shape of a given vector
   3.   All of these
   4.   Direction of a given vector
3. The splitting up of a vector into its components is called?
   1.   Sum of vector
   2.   Resolution of a vector
   3.   None of these
   4.   Subtraction of a vector
4. Null vector is a vector having zero magnitude and?
   1.   Opposite direction
   2.   Arbitrary direction
   3.   Specific direction
   4.   No direction
5. A vector which has magnitude one is called?
   1.   Null vector
   2.   Unit vector
   3.   Position vector
   4.   Resultant vector
6. The magnitude of resultant of a vector `\vec{A}` is given by?
   1.   `{A_x^2}+{A_y^2}`
   2.   `\sqrt{{A_x}+{A_y}}`
   3.   `\sqrt{{A_x^2}+{A_y^2}}`
   4.   None of these
7. Which one of the following is a scalar quantity?
   1.   Torque
   2.   Force
   3.   Displacement
   4.   Mass
8. If a force of 10 N makes an angel of `30^\circ` with x-axis, its x-component is given by?
   1.   None of these
   2.   86.6 N
   3.   8.66 N
   4.   0.866 N
9. Unit vector is used to specify?
   1.   Magnitude of a vector
   2.   Direction of a vector
   3.   Position of a vector
   4.   Dimension of a vector
10. The angel between two rectangular components is?
    1.   `60^\circ`
    2.   `270^\circ`
    3.   `90^\circ`
    4.   `180^\circ`
11. Pick out the scalar quantity among the following?
    1.   Torque
    2.   Time
    3.   Force
    4.   Velocity
12. The resultant of two anti-parallel vectors `\vec{A}` and `\vec{B}` is?
    1.   `\vec{A} - \vec{B}`
    2.   Zero
    3.   `\vec{A} + \vec{B}`
    4.   None of these
13. A sum of two or more vectors is equal to a single vector which is called?
    1.   Null vector
    2.   Product vector
    3.   Component of vector
    4.   Resultant vector
14. When a vector is divided by its magnitude we get?
    1.   Null vector
    2.   Unit vector
    3.   Zero vector
    4.   Position vector
15. The sum of two equal and opposite vectors is a vector called?
    1.   Null vector
    2.   Equal vector
    3.   Position vector
    4.   Unit vector
16. The magnitude of a null vector is?
    1.   Negative
    2.   Double
    3.   One
    4.   Zero
17. A scalar quantity can be described by?
    1.   Magnitude and unit
    2.   Magnitude
    3.   Number
    4.   Unit
18. Two forces act together on a body; the magnitude of their resultant is greatest when the angle between the forces is?
    1.   `0^\circ`
    2.   `45^\circ`
    3.   `60^\circ`
    4.   `180^\circ`
19. An example of a vector quantity?
    1.   Mass
    2.   Speed
    3.   Acceleration
    4.   Work
20. A vector which has zero magnitude is called?
    1.   Resultant vector
    2.   Position vector
    3.   Null vector
    4.   Unit vector
21. The position vector in xz-plane is written as?
    1.   None of these
    2.   `\mathbf {\vec{r}=x\hat i+y\hat j}`
    3.   `\mathbf {\vec{r}=y\hat j+z\hat k}`
    4.   `\mathbf {\vec{r}=x\hat i+z\hat k}`
22. A vector which gives the direction of a given vector is called?
    1.   Negative vector
    2.   Position vector
    3.   Unit vector
    4.   Null vector
23. When a vector `\vec{A}` is multiplied by a positive number then its direction?
    1.   Remains same
    2.   None of these
    3.   Does not change
    4.   Changed by `180^\circ`
24. Which one of the following is a vector quantity?
    1.   Work
    2.   Momentum
    3.   Energy
    4.   Power
25. What is the resultant of 3N and 4N forces acting at right angle to each other?
    1.   5 N
    2.   1 N
    3.   90 N
    4.   7 N
26. A vector quantity can be described by magnitude, unit and?
    1.   Rotation
    2.   Direction
    3.   Dimension
    4.   Unit vector
27. Pick out the vector quantity among the following?
    1.   Mass
    2.   Power
    3.   Force
    4.   Energy
28. When a vector `\vec{A}` is multiplied by a number n, then its magnitude is given by?
    1.   |`n\vec{A}`|
    2.   None of these
    3.   `n\times` |`\vec{A}`|
    4.   `n\times \vec{A}`
29. Two forces of 10 N and 7 N respectively are acting to an object. The minimum value of their resultant is?
    1.   10 N
    2.   3 N
    3.   0 N
    4.   7 N
30. Two lines are drawn at right angle to each other are knows as?
    1.   XY-axis
    2.   Coordinate axis
    3.   Cartesian axis
    4.   Components
31. The position vector in yz-plane is written as?
    1.   `\mathbf {\vec{r}=x\hat i+z\hat k}`
    2.   `\mathbf {\vec{r}=x\hat i+y\hat j+z \hat k}`
    3.   `\mathbf {\vec{r}=x\hat i+y\hat j}`
    4.   `\mathbf {\vec{r}=y\hat j+z\hat k}`
32. The position vector in xy-plane is written as?
    1.   `\mathbf {\vec{r}=y\hat i+z\hat k}`
    2.   `\mathbf {\vec{r}=y\hat j+z\hat k}`
    3.   None of these
    4.   `\mathbf {\vec{r}=x\hat i+y\hat j}`
33. Two vectors having same magnitude and direction are called?
    1.   Null vectors
    2.   Unequal vectors
    3.   None of these
    4.   Equal vectors
34. An example of a scalar quantity?
    1.   Displacement
    2.   Force
    3.   Speed
    4.   Acceleration
35. The unit vector of among vector is determined?
    1.   By dividing the vector with its own magnitude
    2.   By multiplying and dividing the vector with its own magnitude
    3.   None of these
    4.   By multiplying the vector with its own magnitude