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A vector perpendicular to (hat(i)+hat(j...

A vector perpendicular to `(hat(i)+hat(j)+hat(k))` and `(hat(i)-hat(j)-hat(k))` is :-

A

`(hat(i) + hat(j))/(sqrt2)`

B

`hat(k)`

C

`(hat(j) + hat(k))/(sqrt2)`

D

`(hat(i) + hat(j))/(sqrt2)`

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The correct Answer is:
A
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