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The magnitude of two vectors which can b...

The magnitude of two vectors which can be represented in the form `i+j(2x)k` is `sqrt(18)`. Then the unit vector that is perpendicular to these two vectors is

A

`(-i+j)/(sqrt(2))`

B

`(i-j)/(8sqrt(2))`

C

`(-i+j)/8`

D

`(-i+j)/(2sqrt(2))`

Text Solution

Verified by Experts

The correct Answer is:
A
`hatn=(vec(A)xxvec(B))/(|vec(A)xxvec(B)|)`
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