Eamcet Mathematics - Vectors: Scalar Product of Vectors Free Online Tests | Mock Tests | Preparation | Practice Tests

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The vectors 2i+3j-4k and ai+bj+ck are perpendicular, when

A. a=2, b=3, c=4

B. a=4, b=4, c=5

C. a=4, b=4, c=-5

D. a=1, b=1, c=-1

E. None of the above

View Answer

Correct choice: B

Explanation:

To be perpendicular, 2a + 3b - 4c = 0 and option (b) satisfies this equation.

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