The vector projection of a vector 3î + 4k̂ on y-axis is:
The vector projection of a vector 3î + 4k̂ on y-axis is:
- A. 3
- B. 4
- C. 0
- D. 5
Answer: C) 0
Explanation: The y-axis corresponds to the vector ĵ. The dot product of 3î + 4k̂ and ĵ is 0. So the projection is 0.
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