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    Vector Test PDF

    Uploaded by

    Milind Sharma
    1. A vector is not changed if it is displaced parallel to itself or rotated through an arbitrary angle. 2. The difference of two vectors can be treated as the sum of two vectors, as subtraction of vectors can be defined in terms of addition of vectors. 3. A vector quantity is displacement, as it involves both direction and magnitude, unlike scalar quantities like mass or time.

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    © All Rights Reserved
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    Vector Test PDF

    Uploaded by

    Milind Sharma
    29 views2 pages
    1. A vector is not changed if it is displaced parallel to itself or rotated through an arbitrary angle. 2. The difference of two vectors can be treated as the sum of two vectors, as subtraction of vectors can be defined in terms of addition of vectors. 3. A vector quantity is displacement, as it involves both direction and magnitude, unlike scalar quantities like mass or time.

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    1. A vector is not changed if it is displaced parallel to itself or rotated through an arbitrary angle. 2. The difference of two vectors can be treated as the sum of two vectors, as subtraction of vectors can be defined in terms of addition of vectors. 3. A vector quantity is displacement, as it involves both direction and magnitude, unlike scalar quantities like mass or time.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    29 views2 pages

    Vector Test PDF

    Uploaded by

    Milind Sharma
    1. A vector is not changed if it is displaced parallel to itself or rotated through an arbitrary angle. 2. The difference of two vectors can be treated as the sum of two vectors, as subtraction of vectors can be defined in terms of addition of vectors. 3. A vector quantity is displacement, as it involves both direction and magnitude, unlike scalar quantities like mass or time.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    of 2

    PHYSICS CLASSES

    1. Which of the following is not a scalar quantity? 8. Resultant of two vectors A and B is of magnitude P. If
     
    (1) Temperature (2) coefficient of friction
    B is reversed, then resultant is of magnitude Q. What is

    (3) Charge (4) Impulse
    2. A vector is not changed if : the value of P2 + Q2 ?
    (1) it is displaced parallel to itself (1) 2(A2 + B2) (2) 2(A2 – B2)
    (2) It is rotated through an arbitrary angle (3) A2 – B2 (4) A2 + B2
    (3) It is cross-multiplied by a unit vector 9. If | A + B | = | A – B |, then the angle between A
        
    (4) It is multiplied by an arbitrary scalar
    and B will be :

    3. Which of the following statements is false regarding the
    vectors : (1) 30° (2) 45°
    (1) The magnitude of a vector is always a scalar (3) 60° (4) 90°
    (2) Each component of a vector is always a scalar 10. If A is a vector of magnitude 5 units due east. What is

    (3) Two vectors having different magnitudes cannot have the magnitude and direction of a vector –5 A ?
    their resultant zero (1) 5 units due east (2) 25 units due west
    (4) Vectors obey triangle law of addition (3) 5 units due west (4) 25 units due east
    4. Which of the following is not a property of a null vector? 11. On an open ground, a motorists follows a track that turns
    to his left by an angle of 60° after every 500m. starting
      
    (1) A  0  A
      from a given turn, the displacement of the motorist at
    (2) 0  0 which  is a scalar
    the third turn is :
     
    (3) 0A  A (1) 500 m (2) 500 3m
      
    (4) A  A  0 (3) 1000 m (4) 1000 3m
    5. Two vectors A and B inclined at an angle  have a
     
    12. If unit vectors  and B̂ are inclined at an angle , then
    resultant R which makes an angle  with A . If the
     
    | Aˆ  Bˆ | is :
    directions of A and B are interchanged, the resultant
     

    will have the same :  


    (1) 2sin (2) 2cos
    (1) direction (2) magnitude 2 2
    (3) direction as well as magnitude

    (4) None of these (3) 2 tan (4) tan 
    2
    6. If n̂ is a unit vector in the direction of the vector A ,

    13. A body moves 6m north, 8m east and 10m vertically
    then: upwards, the resultant displacement from its initial
      position is :
    A |A|
    (1) n̂   (2) n̂   (1) 10 2m (2) 10 m
    |A| A
     10
    (3) n̂ | A | A (4) n̂  A

    (3) m (4) 20 m
    3
    7. Which of the following quantities is dependent of the
    choice of orientation of the coordinate axes?
      
    14. It is found that | A  B || A | . This necessarily implies:
    (1) A  B (2) Ax + By
     
      
      (1) B  0 (2) A, B are antiparallel
    (3) | A  B | (4) Angle between A and B
     
       
    (3) A, B are perpendicular (4) A. B  0
    :: Space for Rough Work ::

    ST.VIVEKANAND SCHOOL MURTI CIRCLE JNV Colony Bikaner, Contact :- 9414138499 1


    PHYSICS CLASSES
    15. A : Two vectors are said to be equal if, and only if, they 20. A vector is added to an equal and opposite vector of
    have the same magnitude and the same direction. similar nature, forms a :
    R : Addition and subtraction of scalars make sense only (1) unit vector (2) position vector
    for quantities with same units. (3) null vector (4) displacement vector
    (1) If both assertion and reason are true and the reason 21. Unit vector does not have any :
    is correct explanation of the assertion. (1) direction (2) magnitude
    (2) If both assertion and reason are true but reason (3) unit (4) all of these
    is not correct explanation of the assertion.
    22. The magnitude of ˆi  ˆj is :
    (3) If assertion is true, but the reason is false
    (4) If assertion is false, but the reason is true (1) 2 (2) 0

    16. A : the difference of two vectors A and B can be treated


      (3) 2 (4) 4
    as the sum of two vectors. 23. A vector multiplied by the number 0, results into :
    R : Subtraction of vectors can be defined in terms of (1) 0 (2) A

    addition of vectors. 
    (3) 0 (4) Â
    (1) If both assertion and reason are true and the reason
    is correct explanation of the assertion. 24. If P  Q  0 , then which of the following is necessarily
      
    (2) If both assertion and reason are true but reason
    true?
    is not correct explanation of the assertion.  
    (1) P  0 (2) P  Q
     
    (3) If assertion is true, but the reason is false
    (4) If assertion is false, but the reason is true (3) Q  0
     
    (4) P  Q
     
    17. The vector quantity among the following is :
       
    (1) Mass (2) Time 25. If P  Q  P  Q , then :
    (3) Distance (4) Displacement  
    (1) P  0 (2) Q  0
     
    18. A  B can also be written as :
     
     
    (3) | P | 1 (4) | Q | 1
    (1) A  B (2) B  A
       

    (3) B  A (4) B.A


       

    19. Which of the following represents a unit vector?


     
    |A| A
    (1)  (2) 
    A |A|

     
    A |A|
    (3)  (4) 
    A |A|

    :: Space for Rough Work ::

    ST.VIVEKANAND SCHOOL MURTI CIRCLE JNV Colony Bikaner, Contact :- 9414138499

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