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If a 4hat(i)+3hat(j)+8hat(k) is perpendi...

If a `4hat(i)+3hat(j)+8hat(k)` is perpendicular to the vector `4hat(j)-4hat(i)+mhat(k)`, then the value of m is

A

`(1)/(2)`

B

`-(1)/(2)`

C

1

D

-1

Text Solution

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The correct Answer is:
A
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Knowledge Check

  • If a vector 2hat(i)+3hat(j)+8hat(k) is perpendicular to the vector 4hat(j)-4hat(i)+alpha hat(k) . Then the value of alpha is

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    A
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    B
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    D
    `1`

  • The vector perpendicular to the vectors 4hat(i)-hat(j)+3hat(k) and -2hat(i)+hat(j)-2k whose magnitude is 9, is

    A
    `3hat(i)+6hat(j)-6hat(k)`
    B
    `3hat(i)-6hat(j)+6hat(k)`
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    D
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