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What is the magnitude of the scalar prod...

What is the magnitude of the scalar product of the following vectors ?
`veca=hati+hatj,vecb=hati+hatk`

A

1

B

2

C

`sqrt(2)`

D

3

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AAKASH INSTITUTE ENGLISH-VECTOR ALGEBRA-ASSIGNMENT (SECTION-A)
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  5. ABCD is parallelogram. If L and M are the middle points of BC and CD, ...

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  7. p1 hati+p2hatj is a unit vector perpendicular to 4hati-3hatj if

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  8. If vecOA=veca,vecOB=vecb,vecOC=2veca+3vecb,vecOD=veca-2vecb, the lengt...

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  9. Let veca=3hati-hatj, vecb=hati-2hatj, vec c=-hati+7hatj and vecp=veca+...

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  10. If vecaxxvecb=vecaxxvec c,veca ne 0, then

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  11. Given two vectors veca=2hati-3hatj+6hatk, vecb=-2hati+2hatj-hatk and...

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  13. Let veca , vecb and vecc be three non-zero vectors such that veca + ve...

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  14. If vecaxxvecb=vecc,vecb xx vecc=veca, where vecc != vec0, then

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  15. ABCDEF is a regular hexagon where centre O is the origin, if the posit...

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  16. The value of the following expression hati.(hatjxxhatk)+j.(hatixxhat...

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  17. For any vector veca the value of (vecaxxhati)^2+(vecaxxhatj)^2+(vecaxx...

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  19. |(vecaxxvecb)|^(2) is eqaul to

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