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The value of m for which straight line 3...

The value of m for which straight line `3x-2z+3=0=4x-3y+4z+1` is parallel to the plane `2x-y+mz-2=0` is

A

`-2`

B

`8`

C

`-18`

D

`11`

Text Solution

Verified by Experts

The correct Answer is:
A
Vertor `((3hati-2hatj+hatk)xx(4hati-3hatj+4hatk))` is perpendicular to
`2hati-hatj+mhatk` thus
`|{:(3,-2,1),(4,-3,4),(2,-1,m):}|=0` or `m=-2`
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