MCQ
Which of the sets given below may represent the magnitudes of three vectors adding to zero?
- A$2, 4, 8$
- B$4, 8, 16$
- ✓$1, 2, 1$
- D$0.5, 1, 2$
✓
Answer
Correct option: C.
$1, 2, 1$
$1, 2$ and $1$ may represent the magnitudes of three vectors adding to zero. For example one of the vector of length $1$ should make an angle of $135^{\circ}$ with $x-$axis and the other vector of length $1$ makes an angle of $225^{\circ}$ with $x-$axis. The third vector of length $2$ should lie along $x-$axis.
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