Vector Algebra Question 383
Question: The vectors $ 2,\mathbf{i}+3,\mathbf{j}-4,\mathbf{k} $ and $ a,\mathbf{i}+b,\mathbf{j}+c,\mathbf{k} $ are perpendicular, when
[MNR 1982; MP PET 1988; MP PET 2002]
Options:
A) $ a=2,b=3,c=-4 $
B) $ a=4,b=4,c=5 $
C) $ a=4,b=4,c=-,5 $
D) None of these
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Answer:
Correct Answer: B
Solution:
- To be perpendicular, $ 2a+3b-4c=0 $ and option satisfies this equation.
BETA
