Question

The vector projection of a vector i k ˆ 4 ˆ 3 on y-axis is [RPMT 2004] (a) 5 (b) 4 (c) 3 (d) Zerob



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Answer 1

The Given Vector =3i + 4k  

The above vector can also be written as :

3i +0j +4k

As the vector does not have any component in Y axis.

∴Projection of Vector in Y axis is Zero.

Hence the vector lies only in X-Z plane and has no component along Y axis.

Answer 2

Option B is the correct answer

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