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