Fundamentals of Vectors MCQs
1. What is the vertical component of the force 5 N acting on a particle along a direction making an angle of 600?
a) 3 N
b) 2.5 N
c) 10 N
d) 4 N
Answer: (b) 2.5 N
2. What is the minimum number of coplanar vectors with different magnitudes that can be added to get a resultant of zero?
a) 1
b) 2
c) 3
d) 4
Answer: (c) 3
3. A fly in the hall of dimensions 10 m×12 m×14 m starts to fly from one corner and ends up at the diametrically opposite corner. What is the magnitude of its flight?
a) 17 m
b) 21 m
c) 26 m
d) 36 m
Answer: (b) 21 m
4. Any vector in an arbitrary direction can be replaced by two or three vectors
a) perpendicular to each other and have the original vector as their resultant
b) Parallel to each other and have the original vector as their resultant
c) Arbitrary vectors which have original vectors as their resultant
d) It is impossible to resolve a vector
Answer: (c) Arbitrary vectors which have original vectors as their resultant
5. Angular momentum is
a) A scalar vector
b) An axial-vector
c) A polar vector
d) A displacement vector
Answer: (b) An axial-vector
6. Which of the following is a vector?
a) Surface Tension
b) Moment of Inertia
c) Pressure
d) None of the above
Answer: (d) None of the above
7. Which of the following is a scalar quantity?
a) Acceleration
b) Electric Field
c) Work
d) Displacement
Answer: (c) Work
8. A boy walks uniformly along the sides of a rectangular park with dimensions 400 m×300 m, starting from one corner to the other corner diagonally opposite. Which of the following statements is false?
a) His displacement is 700 m
b) His displacement is 500 m
c) He has travelled a distance of 700 m
d) His velocity is not uniform throughout the walk
Answer: (a) His displacement is 700 m
