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Vector Algebra — Maths STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceMathsVector Algebra1 Mark
MCQ
If $(\hat{i}+\lambda \hat{j}) \times(5 \hat{i}+3 \hat{j}+\sigma \hat{k})=0$, what are the values of $\lambda$ and $\sigma$ ?
  • ✓
    $\lambda=\frac{3}{5}, \sigma=0$
  • B
    $\lambda=\frac{5}{3}, \sigma=5$
  • C
    $\lambda=3, \sigma=0$
  • D
    (cannot be found as there are two unknowns and only one equation)
✓

Answer

Correct option: A.
$\lambda=\frac{3}{5}, \sigma=0$
$\lambda=\frac{3}{5}, \sigma=0$

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