Scalars & Vectors (Addition and Subtraction, Scalar and Vector Products, Unit Vector, Resolution of a Vector) NEET Questions

Physics - Kinematics

Scalars & Vectors (Addition and Subtraction, Scalar and Vector Products, Unit Vector, Resolution of a Vector) MCQ Questions


1.
Which of the following is a scalar quantity?
A.
Force
B.
Displacement
C.
Work
D.
Velocity
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ANSWER :
C. Work
2.
A vector quantity is fully specified by:
A.
Magnitude only
B.
Direction only
C.
Magnitude and direction both
D.
Neither magnitude nor direction
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ANSWER :
C. Magnitude and direction both
3.
The magnitude of the resultant of two vectors is maximum when the angle between them is:

NEET - 2020

A.
0°
B.
45°
C.
90°
D.
180°
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ANSWER :
C. 90°
4.
Two vectors A and B are equal if and only if they have:
A.
Same magnitude only
B.
Same direction only
C.
Same magnitude AND same direction
D.
Same starting point
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ANSWER :
C. Same magnitude AND same direction
5.
A null vector (zero vector) has:
A.
Zero magnitude and undefined direction
B.
Unit magnitude and undefined direction
C.
Zero magnitude and defined direction
D.
Non-zero magnitude and zero direction
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ANSWER :
A. Zero magnitude and undefined direction
6.
Which property of the null vector is INCORRECT?
A.
A + 0 = A
B.
lambda x 0 = 0
C.
0 x A = A
D.
|0| = 0
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ANSWER :
C. 0 x A = A