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If hatn is a unit vector in the directio...

If `hatn` is a unit vector in the direction of the vector `vecA`, then:-

A

`hatn=absvecA/vecA`

B

`hatn=vecAabsvecA`

C

`hatn=vecA/absvecA`

D

`hatn=-vecA/absvecA`

Text Solution

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The correct Answer is:
C
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AAKASH INSTITUTE-MOCK TEST 4 -Example
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  2. The component of a vector vecA along y-axis will have maximum value if

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  3. If hatn is a unit vector in the direction of the vector vecA, then:-

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  4. If a vector of magnitude 10 units along x-axis multiplied by a constan...

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  5. The angle that the vector bar (OA)= 5hati + 5hatj mix with y-axis is

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  6. If vecA=2hati + 3hatj and vecB= 5hati + 7hatj, then the vector having ...

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  7. A vector is not changed if

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  8. The unit vector of a vector vecA =2hati + 4hatj is

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  9. If vecA= a hati + 0.5hatj + 0.5hatk is unit vector, then value of a w...

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  10. If a vector bar(OP) = 3hati + 3hatj is turned clockwise by an angle of...

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  11. Which one of the following quantities is a scalar ?

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  12. The length of vector, vecA= 3hati +4hatj + 9hatk in y-z plane is

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  13. Two force vectors vecF1 and vecF2 , each of magnitude 10 N act at a po...

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  14. The resultant vector of of bar(OA) = 2hati + 3hatj + 6hatk and bar(OB)...

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  15. If vecA + vecB = vecC and absA^2 + absB^2 = absC^2 , then angle betwee...

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  16. The magnitude of resultant vectors of two vectors given by vecA = 10ha...

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  17. The velocity vector at a point A varies with time as vecv=ahati+bthat...

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  18. The velocity varies with time as vecv = ahati + bthatj , where a and ...

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  19. vecP is resultant of vecA and vecB. vecQ is resultant of vecA and -vec...

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