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The components of a vector along the x- ...

The components of a vector along the x- and y- directions are `(n+1)` and 1, respectively. If the coordinate system is rotated by an angle `theta=60^(@)`, then the components change to `n` and 3. The value of `n` is

Text Solution

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Length of the vector does not change on rotation.
`sqrt((n+1)^(2)+1^(2))=sqrt(n^(2)+3^(2))rArrn=(7)/(2)=3.5`
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