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vec(A)=hat(j)-2hat(i)+3hat(k) " , "...

`vec(A)=hat(j)-2hat(i)+3hat(k) " , "vec(B)= hat(i)+2hat(j)+2hat(k)`
find `vec(A).vec(B)`

A

3

B

6

C

-3

D

-6

Text Solution

Verified by Experts

The correct Answer is:
B
`-2+2+6=6`
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VIBRANT-REVIEW TEST-PART - II : PHYSICS
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  7. The angle which a vector hat(i)-hat(j)+sqrt(2)hat(k) makes with y-axis...

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  11. A particle is projected vertically upwards from the ground with a spee...

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  12. Two particles are projected with speed 4 m//s and 3 m//s simultaneousl...

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  13. A particle moves in xy plane with a velocity given by vecV = (8t-2)hat...

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  14. The velocity of particle is 3hat(i) +2hat(j)+3hat(k). Find the vector...

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  15. Under a force (10hat(i)-3hat(j)+6hat(k)) Newton a body of mass 5 kg mo...

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  17. Two blocks A and B, one on the top of other are released on fixed incl...

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