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Two vectors vecA=3hati+2hatj+hatk" and "...

Two vectors `vecA=3hati+2hatj+hatk" and "vecB=5hatj-9hatj+Phatk` are perpendicular to each other. The value of 'P' is :-

A

3

B

-3

C

-2

D

2

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The correct Answer is:
A
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ALLEN -RACE-Basic Maths (VECTORS)
  1. The angle made by the vector vecA=hati+hatj with x-axis is

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  2. Correct relation is :

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  3. Two vectors vecA=3hati+2hatj+hatk" and "vecB=5hatj-9hatj+Phatk are per...

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  4. If the vectors (hati+hatj+hatk) and 3 hati form two sides of a triangl...

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

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

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  7. When vecA.vecB=-|vecA||vecB|, then :-

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  8. The component of vector A=a(x)hati+a(y)hatj+a(z)hatk and the directioi...

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  9. (vecA+2vecB).(2vecA-3vecB):-

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  10. If vecA=3hati+4hatj and vecB=6hati+8hatj, select correct alternatives ...

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  11. The angle between the vectors (hati+hatj) and (2^(1/2)hatj+hatk)) is

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  12. vecA, vecB and vecC are vectors each having a unit magneitude. If ...

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  13. vecA and vecB and vectors expressed as vecA = 2hati + hatj and vecB = ...

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  14. The angle made by the vector vecA=2hati+2hatj with x-axis is

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  15. Two vectors vecA=4hati+alphahatj+2hatk" and "vecB=2hati+hatj+hatk are ...

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  16. If vector hati+hatj-hatk" and "2hati+2hatj+lambdahatk are parallel tha...

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  17. If vecAxxvecB=vecC then find out the correct one :-

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  18. The position vectors of points A,B,C and D are A=3hati+4hatj+5hatk,B=4...

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  19. If vector (veca+ 2vecb) is perpendicular to vector (5veca-4vecb), then...

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  20. If hata" and "hatb are non-collinear unit vectors and if |hata+hatb|=s...

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