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Vector — JEE physics STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 ScienceJEE physicsVector1 Mark
MCQ
The vector projection of a vector $3 \hat{i}+4 \hat{k}$ on $y$-axis is
  • A
    5
  • B
    4
  • C
    3
  • ✓
    Zero
✓

Answer

Correct option: D.
Zero
(d) As the multiple of $\hat{j}$ in the given vector is zero therefore this vector lies in $X Z$ plane and projection of this vectoron $y$-axis is zero.

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