MCQ
The component of $i + j$ along $j + k$ will be
- A$\frac{{i + j}}{2}$
- ✓$\frac{{j + k}}{2}$
- C$\frac{{k + i}}{2}$
- DNone of these
✓
Answer
Correct option: B.
$\frac{{j + k}}{2}$
b
(b) $\left[ {(i + j)\,.\,\frac{{(j + k)}}{{\sqrt 2 }}} \right]\frac{{(j + k)}}{{\sqrt 2 }} = \frac{{(j + k)}}{2}.$
(b) $\left[ {(i + j)\,.\,\frac{{(j + k)}}{{\sqrt 2 }}} \right]\frac{{(j + k)}}{{\sqrt 2 }} = \frac{{(j + k)}}{2}.$
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