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If a vector 2hati+3hatj+8hatjk is perpen...

If a vector `2hati+3hatj+8hatjk` is perpendicular to the vector `4hatj-4hati+alphahatk`. Then the value of `alpha` is

A

`-1`

B

`1/2`

C

`-1/2`

D

`1`

Text Solution

Verified by Experts

The correct Answer is:
C
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ERRORLESS -VECTORS-Exercise
  1. The vectors 5hati+8hatj and 2i+7hatj are added. The magnitude of the s...

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  2. Two vectors vecA and vecB are such that vecA+vecB=vecA-vecB. Then

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  3. If a vector 2hati+3hatj+8hatjk is perpendicular to the vector 4hatj-4h...

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  4. If two vectors 2hati+3hatj-hatk and -4hati-6hatj-lamdahatk are paralle...

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  5. A body, acted upon by a force off 50N is displaced through a distance ...

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  6. A particle moves from position 3hati+2hatj-6hatk to 14hati+13hatj+9hat...

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  7. If for two vector vecA and vecB, sum (vecA+vecB) is perpendicular to t...

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  8. The angle between the vector vecA and vecB is theta. The value of the ...

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  9. If AxxB=BxxA then the angle between A and B is

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  10. If vecA=3hati+hatj+2hatk and vecB=2hati-2hatj+4hatk then value of |vec...

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  11. The torque of the force vecF=(2hati-3hatj+4hatk)N acting at the point ...

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  12. If vecAxxvecB=vecC, then which of the followig statements is wrong

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  13. If a particle of mass m is moving with constant velocity v parallel to...

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  14. Consider two vectors vecF(1)=2hati+5hatk and vecF(2)=3hatj+4hatk. The ...

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  15. Consider a vector vecF=4hati-3hatj. Another vector that is perpendicul...

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  16. Two vector vecA and vecB are at right angles to each other, when

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  17. If |vecV(1)+vecV(2)|=|vecV(1)-vecV(2)| and V(2) is finite, then

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  18. A force vecF=(5hati+3hatj) Newton is applied over a particle which dis...

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  19. The angle between two vectors -2hati+3hatj+k and hati+2hatj-4hatk is

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  20. The angle between the vectors (hati+hatj) and (hatj+hatk) is

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