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STD 12 - 10. vector algebra — Mathematics STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceMathematicsSTD 12 - 10. vector algebra1 Mark
MCQ
The component of $i + j$ along $j + k$ will be
  • A
    $\frac{{i + j}}{2}$
  • ✓
    $\frac{{j + k}}{2}$
  • C
    $\frac{{k + i}}{2}$
  • D
    None of these
✓

Answer

Correct option: B.
$\frac{{j + k}}{2}$
b
(b) $\left[ {(i + j)\,.\,\frac{{(j + k)}}{{\sqrt 2 }}} \right]\frac{{(j + k)}}{{\sqrt 2 }} = \frac{{(j + k)}}{2}.$

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