1.

If bara=bari+barj-bark,barb=bari-barj+bark,barc is a unit vector perpendicular to bara and coplanar with bara and barb, then barc =

Answer»

`1/(SQRT6)(2bari+barj+bark)`
`PM(1/(sqrt6)(2bari-barj+bark)`
`1/(sqrt6)(2bari+barj-bark)`
`1/(sqrt6)(2bari-barj-bark)`

ANSWER :B


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