1.

The vector bar(i)+xbar(j)+3bar(k) is rotated through angle theta and doubled in magnitude, then it ecomes 4(i)+(4x-2)bar(j)+2bar(k). The value of x is

Answer»

`2, -2//3`
`1//3, 2`
`2//3, 0`
`2, 7`

ANSWER :A


Discussion

No Comment Found