MCQ
$\hat{\mathrm{i}}-2 \hat{\mathrm{j}}+\hat{\mathrm{k}}$ पर सदिश $2 \hat{\mathrm{i}}-\hat{\mathrm{j}}+\hat{\mathrm{k}}$ का प्रक्षेप है :
- A$\frac{4}{\sqrt{6}}$
- ✓$\frac{5}{\sqrt{6}}$
- C$\frac{4}{\sqrt{3}}$
- D$\frac{7}{\sqrt{6}}$
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