What is the minimum number of unequal magnitude vectors required to get a null vector?
Correct answer: C. Three
- A. Zero
- B. Two
- C. Three
- D. None
Explanation
Two unequal vectors cannot have a zero resultant because their magnitudes would have to be equal and opposite. Three unequal vectors can form a closed triangle, so their vector sum can be zero. Students often choose two by focusing on opposite directions but overlooking the requirement of equal magnitudes.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Addition of Vectors
Vector addition combines directed quantities using the head-to-tail, parallelogram and component methods. Work includes finding the resultant magnitude and direction for two or more vectors, resolving vectors into perpendicular components, and distinguishing vector addition from scalar addition, where direction has no role.
Practise Vectors and Equilibrium
431 free Vectors and Equilibrium MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Physics questions like this
Physics is on 16 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Addition of Vectors questions
Which of the following is reverse process of composition of vectors?
A vector which has magnitude one is called _________?
For anti-parallel vectors angle is equal to ____________?
Which of the following pair of forces can produce a resultant of 8N?
Which of the following can not be the resultant of two vectors having magnitude 10N and 15N?
Unit vector is used to specify the _____________?