1.

The unit vector(s) parallel to bar(i)-3bar(j)-5bar(k) is

Answer»

`+1/sqrt(35)(BAR(i)-3BAR(j)-5bar(k))`
`bar(i)-3bar(j)-5bar(k)`
`-1/sqrt(35)(bar(i)-3bar(j)-5bar(k))`
Both 1 and 3

Answer :D


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