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

 

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