Question:medium
The value of \( m \) if the vectors \( 4i - 3j + 5k \) and \( mi - 4j + k \) are perpendicular, is
The value of \( m \) if the vectors \( 4i - 3j + 5k \) and \( mi - 4j + k \) are perpendicular, is
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Perpendicular vectors ⇒ dot product zero. This is one of the fastest vector checks in exams.
Updated On: Apr 30, 2026
- \( -\frac{15}{4} \)
- \( -\frac{17}{4} \)
- \( -\frac{19}{4} \)
- \( 0 \)
- \( \frac{11}{4} \)
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The Correct Option is B
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