1.

A unit vector parallel to the intersection of planes `vecr.( hati- hatj + hat k)=5 and vec r .(2 hati+ hatj-3 hatk)=4` is ___A. `(2 hati+5 hatj-3 hatk )/(sqrt38)`B. `(2 hati-5 hatj+3 hatk )/(sqrt38)`C. `(2 hati+5 hatj+3 hatk )/(sqrt38)`D. `(-2 hati+5 hatj-3 hatk )/(sqrt38)`

Answer» Correct Answer - C


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