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Question: The vector projection of a vector \(3\widehat{i} + 4\widehat{k}\)on y-axis is...

The vector projection of a vector 3i^+4k^3\widehat{i} + 4\widehat{k}on y-axis is

A

5

B

4

C

3

D

Zero

Answer

Zero

Explanation

Solution

As the multiple of j^\widehat{j} in the given vector is zero therefore this vector lies in XZ plane and projection of this vector on y-axis is zero.