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Introduction

Unit vector p...

Question

Unit vector perpendicular to $x - y$ plane is

^i, -^i

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^j, -^j

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^k, -^k

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All of the above

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Solution

The correct option is C $^k, -^k$
The axis perpendicular to the $x - y$ plane is $\pm z$ , so, the unit vector will be $\pm^k$ .

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