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A vector is represented by 3hat(i)+hat(...

A vector is represented by `3hat(i)+hat(j)+2hat(k)` Its length in XY plane is

A

2

B

`sqrt14`

C

`sqrt10`

D

`sqrt5`

Text Solution

Verified by Experts

The correct Answer is:
C
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TARGET PUBLICATION-SCALARS AND VECTORS-Critical Thinking
  1. If more than one forces are acting on a heavy rigid body such that the...

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  2. The vector projection of a vector 3hat(i)+4hat(k) on y-axis is

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  3. A vector is represented by 3hat(i)+hat(j)+2hat(k) Its length in XY pl...

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  4. A particle is simultaneously acted by two forces equal to 4 N and 3N. ...

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  5. The resultant of two vectors at right angles is 5 N. If the angle betw...

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  6. vec(A) is a vector with magnitude A, then the unit vector hat(A) in th...

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  7. If a unit vector is represented by 0.5 hat(i)-0.8 hat(j)+chat(k), then...

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  8. A Unit vector in the direction of the negative of the vector (-hat(i)+...

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  9. If vec(A)=2hat(i)+6hat(j)and vec(B)=4hat(i)+3hat(j), the vector having...

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  10. If the sum of two unit vectors is a unit vector, then magnitude of dif...

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  11. A vector of magnitude b is rotated through angle theta. What is the ch...

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  12. The resultant of two vectors vec(P) and vec(Q) is vec(R ). If the magn...

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  13. Choose the correct options A force vector applied on a mass is repres...

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  14. Vector vec(A)=2hat(i)-3hat(j)+ahat(k)andvec(B)=12hat(i)-bhat(j)+6hat(k...

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  15. If a 4hat(i)+3hat(j)+8hat(k) is perpendicular to the vector 4hat(j)-4h...

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  16. A force vec(F)=3hat(i)+chat(j) +2hat(k) acting on a particle causes a ...

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  17. Work done when a force of (7hat(i)-4hat(j)-4hat(k)) N moves a body thr...

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  18. If vec(P)=hat(i)-2hat(j)-3hat(k)and vec(Q)=4hat(i)-2hat(j)+6hat(k) , t...

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  19. Choose the CORRECT statement.

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  20. The sine of the angle between 3hat(i)+hat(j)+2hat(k)and 2hat(i)-2hat(j...

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