Vector Algebra - Online Test
Q1. If a vector is expressed in component form as then the magnitude of the vectoris
Answer : Option D
Explaination / Solution:
Q2. If a vector is expressed in component form as then x, y and z are referred to as
Answer : Option C
Explaination / Solution:
In x , y and z represents the components of along x-axis ,y-axis and z-axis respectively.
Q3. Which of the following is a vector?
Answer : Option A
Explaination / Solution:
Acceleration is a vector quantity , because acceleration is defined as the rate of change of velocity w.r.t. time.and velocity specifies direction
Q4. In the figure which are the Equal vectors?
Answer : Option B
Explaination / Solution:
are equal vectors , because they have equal magnitude and same direction.
are equal vectors , because they have equal magnitude and same direction.
Q5. In the figure which are the collinear vectors?
Answer : Option B
Explaination / Solution:
are collinear vectors , because are parallel in direction and same magnitude.
are collinear vectors , because are parallel in direction and same magnitude.
Q6. 
are
are
Answer : Option A
Explaination / Solution:
are collinear vectors , because they are parallel in direction and having the same magnitude.
are collinear vectors , because they are parallel in direction and having the same magnitude.
Q7. If two vectors have their corresponding direction cosines equal then the two vectors
Answer : Option B
Explaination / Solution:
If the direction cosines of two vectors are same , then the vectors are said to be parallel.
Q8. In triangle ABC, which of the following is not true?
Answer : Option B
Explaination / Solution:
(triangle law of vector addition) but
Q9. If 
are two collinear vectors, then which of the following are incorrect
are two collinear vectors, then which of the following are incorrect
Answer : Option A
Explaination / Solution:
If 
are two collinear vectors, then, they are parallel to the same line irrespective of their magnitudes and directions.
are two collinear vectors, then, they are parallel to the same line irrespective of their magnitudes and directions.
Q10. Magnitude of the vector 
is
is
Answer : Option C
Explaination / Solution:
