If \[a=2i+j+2k\] and \[b=5i-3j+k,\] then the projection of b on a is [Karnataka CET 2002]

If \[a=2i+j+2k\] and \[b=5i-3j+k,\] then the projection of b on a is [

1.	If \[a=2i+j+2k\] and \[b=5i-3j+k,\] then the projection of b on a is [Karnataka CET 2002]
A.	3
B.	4
C.	5
D.	6
Answer» B. 4

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If \[a=2i+j+2k\] and \[b=5i-3j+k,\] then the projection of b on a is [Karnataka CET 2002]

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