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Unit vector along the vector $4 î + 3 \hat{j}$ is

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$(4 î + 3 \hat{j}) / 5$

$4 î + 3 \hat{j}$

$(4 î + 3 \hat{j}) / 10$

$(4 î + 3 \hat{j}) / 6$

answer is A.

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Detailed Solution

: Unit vector along 4î + 3ĵ , is obtained by dividing the present vector by its magnitude. The magnitude of the given vector is 5. Hence, the required unit vector is $(4 î + 3 \hat{j}) / 5$

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