1.

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 …………..

Answer»

`(BAR(i)-bar(J))/(sqrt(2))`
`+-((bar(j)-bar(K))/(sqrt(2)))`
`(bar(k)-bar(i))/(sqrt(2))`
`(bar(i)+bar(j)+bar(k))/(sqrt(3))`

ANSWER :B


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