If the vectors \[3i+\lambda \,j+k\] and \[2i-j+8k\] are perpendicular, then \[\lambda \] is [Kerala (Engg.) 2002]

If the vectors \[3i+\lambda \,j+k\] and \[2i-j+8k\] are perpendicular,

1.	If the vectors \[3i+\lambda \,j+k\] and \[2i-j+8k\] are perpendicular, then \[\lambda \] is [Kerala (Engg.) 2002]
A.	? 14
B.	7
C.	14
D.	1/7
Answer» D. 1/7

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If the vectors \[3i+\lambda \,j+k\] and \[2i-j+8k\] are perpendicular, then \[\lambda \] is [Kerala (Engg.) 2002]

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