A unit vector is coplanner with bar(i)+b...

A unit vector is coplanner with `bar(i)+bar(j)+2bar(k)` and `bar(i)+2bar(j)+bar(k)` and it is perpendicular to the vector `bar(i)+bar(j)+bar(k)`. Then the vector …………..

A

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

B

`+-((bar(j)-bar(k))/(sqrt(2)))`

C

`(bar(k)-bar(i))/(sqrt(2))`

D

`(bar(i)+bar(j)+bar(k))/(sqrt(3))`

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The correct Answer is:

B

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