What is the unit vector along i + j ?

Physics · JEE Main · NTA Exams — Physics and Measurement

1. \(\frac{\hat{\mathrm{i}}+\hat{\mathrm{j}}}{\sqrt{2}}\)
2. \(\sqrt{2}(\hat{i}+\hat{j})\)
3. \(\hat{\mathrm{i}}+\hat{\mathrm{j}}\)
4. \(\hat{\mathrm{k}}\)

Answer

(A) i + j 2

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