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The , perpendicular vector on both of (3...

The , perpendicular vector on both of `(3hat i +hat j + 2hat k) and (2hat i -2hat j +4hat k)` is:

A

`1/(sqrt3)(hati - hat j -hat k)`

B

`(hat i- hat j-hat k)`

C

`1/(sqrt3)(hat i+hat j+hat k)`

D

`(sqrt(3hat i)-hat j-hat k)`

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