A level Vectors and Scalars Quiz 1

16 Questions

Quiz Description

A level Vectors and Scalars Quiz. Scalars are the physical quantities that can be represented by their magnitude. Examples of such physical quantities include mass, time, length, energy, temperature etc. All of these require a magnitude to be represented. For instance mass is represented by just expressing its magnitude in respective units, like 5 kg, time is expressed in seconds, energy in joules, temperature in Celsius. There is no sense of direction in these physical quantities.

Vectors are the physical quantities that require magnitude and also direction to be represented. Examples include force, velocity, acceleration, etc. All of these require a magnitude and a direction in which they act to be completely defined. For instance force needs to be defined in terms of magnitude in N and also the direction in which it acts; velocity is expressed in ms-1 and needs a direction in which the body is travelling.,

Unit Vector:

A vector having a magnitude equal to 1 and it is denoted by putting a hat (circumflex) on top of the vector symbol.

Unit vector = u^

A unit vector in the x-direction can be denoted by    or  i^i^ similarly, unit vector in y-direction can be denoted by   jj  or this     

Null vector:

A vector having a zero magnitude and arbitrary direction is called as null vector. For example, the result of the sum of a vector and its negative vector is always a null vector.

A+ (-A) =0

Equal vectors:

Two vectors suppose A and B are said to be equal if they have the same magnitude and same direction regardless of the position of their starting points.

Negative of a vector:

Vector equal in magnitude with the other vector but in the opposite direction.  Such vector is called as negative of a vector.  Suppose we have two vectors A and B both have the same magnitude but they are opposite in direction so they will be written as:

A = -B

1:

  The quantity which has the only magnitude is called ____________ 


Correct
  • 1:
    A scalar quantity
  • 2:
    A vector quantity
  • 3:
    A chemical quantity
  • 4:
    A magnitude quantity
2:

 Force is a vector quantity. 


Correct
  • 1:
    True
  • 2:
    False
  • 3:
    True and False
  • 4:
    None
3:

 A polar vector is one which? 


Correct
  • 1:
    Gives the position of an object
  • 2:
    Tells how much and in which direction an object has changed its position
  • 3:
    Represents rotational effect
  • 4:
    Has a starting point of application
4:

 Which of the following acts in accordance with right hand screw rule? 


Correct
  • 1:
    Polar vector
  • 2:
    Axial vector
  • 3:
    Displacement vector
  • 4:
    Position vector
5:

 What is the magnitude of a unit vector? 


Correct
  • 1:
    It has no magnitude
  • 2:
    Zero
  • 3:
    Constant but not zero
  • 4:
    Unity
6:

 Which of the following has zero magnitude? 


Correct
  • 1:
    Fixed vector
  • 2:
    Zero vector
  • 3:
    Modulus of a vector
  • 4:
    Unit vector
7:

 Flying a bird is an example of ____________ 


Correct
  • 1:
    Collinear vector
  • 2:
    Multiplication of vector
  • 3:
    Addition of vector
  • 4:
    Composition of vector
8:

 Two forces whose magnitudes are in ratio of 3:5 give a resultant of 35N. If the angle of inclination is 60°, calculate the magnitude of each force. 


Correct
  • 1:
    15N and 35N
  • 2:
    15N and 25N
  • 3:
    10N and 15N
  • 4:
    20N and 5N
9:

 Walking off a man is an example of ____________ 


Correct
  • 1:
    Resolution of forces
  • 2:
    Addition of vectors
  • 3:
    Subtraction of vectors
  • 4:
    Multiplication of vectors
10:

Velocity is a 


Correct
  • 1:
    Scalar Quantity
  • 2:
    Vector Quantity
  • 3:
    Base Quantity
  • 4:
    Derived Quantity
11:

Volume is a 


Correct
  • 1:
    Scalar Quantity
  • 2:
    Vector Quantity
  • 3:
    A Scalar and a Vector
  • 4:
    None
12:

If two forces of 20N due north and 12N due south are acting on an object. The resultant force will be


Correct
  • 1:
    32N due North
  • 2:
    20N due North
  • 3:
    32N due South
  • 4:
    8N due North
13:

 Mass, length, speed, work, time and energy are the examples of 


Correct
  • 1:
    velocity
  • 2:
    Scalar
  • 3:
    Vector
  • 4:
    Displacement
14:

Graphical representation of vectors is a directed line segment with


Correct
  • 1:
    direction
  • 2:
    point
  • 3:
    circle
  • 4:
    arrowhead
15:

The vector sum of two vectors is also called


Correct
  • 1:
    direction
  • 2:
    resultant
  • 3:
    velocity
  • 4:
    magnitude
16:

Addition of a vector with its reverse direction is called


Correct
  • 1:
    vector addition
  • 2:
    vector subtraction
  • 3:
    vector multiplication
  • 4:
    vector division

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A level Vectors and Scalars Quiz 1
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