The vector a=1 8 i-3 8 j+1 4 k is - Vidyadip

MCQ

The vector $\bar{a}=\frac{1}{8} \hat{i}-\frac{3}{8} \hat{j}+\frac{1}{4} \hat{k}$ is

A
a unit vector
B
parallel to vector $6 \hat{ i }-12 \hat{ j }+8 \hat{ k }$
C
collinear with vector $\hat{i}-3 \hat{j}+\hat{k}$
D
perpendicular to the vector $2 \hat{i}+4 \hat{j}+5 \hat{k}$

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