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  • Which of the following is not a unit vector along co-ordinate axes?Option: 1 <img alt="2\hat{i}" src="https://learn.careers360.com/latex-image/?2%5Ch

Which of the following is not a unit vector along co-ordinate axes?

Option: 1

2\hat{i}


Option: 2

-\hat{i}


Option: 3

-\hat{j}


Option: 4

-\hat{k}


Answers (1)

best_answer

As we learned

Regular Cartesian System -

In three dimensional co-ordinate system, unit vectors in direction of positive x, y, z axis are \hat{i}, \hat{j}\ and\ \hat{k} respectively.

- wherein

Fig 5

 

  \because \hat{i},\hat{j},\hat{k} are unit vectors along co-ordinate axes, so \because -\hat{i},-\hat{j},-\hat{k}

will also be unit vectors along co-ordinates axes but in direction of negative x, y & z-axis respectively.

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Riya

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