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The value of lambda for which the vector...

The value of `lambda` for which the vectors `veca=2hati+lambdahatj+hatk` and `vecb=hati-2hatj+3hatk` are perpendicular to each other is :

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The correct Answer is:
`lambda=(5)/(2)`
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BETTER CHOICE PUBLICATION-VECTOR ALGEBRA -PREVIOUS YEARS BOARD.S QUESTIONS FOR PRACTICE (MCQ)
  1. The magnitude of the vector 2hati-6hatj-3hatk is :

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  2. Show that the three points with position vectors -2hati+3hatj+5hatk,ha...

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  3. The value of lambda for which the vectors veca=2hati+lambdahatj+hatk ...

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  4. Let veca=4hati+5hatj-hatk,vecb=hati-4hatj+5hatk and vecc=3hati+hatj-ha...

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  5. Find the scalar projection of vecb on veca where : veca=2hati-2hatj+ha...

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  6. If veca=2hati-2hatj+hatk,vecb=hati+2hatj-2hatk and vecc=2hati-hatj+4ha...

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  7. Find the area of the parallelogram whose diagonals are : veca=hati-2ha...

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  8. Find the position vector of a point R which divides the line joining t...

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  9. Find the angle between two vectors vecaand vecb with magnitudes 1 and ...

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  10. Find a vector of magnitude 19, which is perpendicular to both the vect...

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  11. Find a vector of magnitude 7 , which is perpendicular to both the vect...

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  12. Find the area of triangle with vertices (1,1,2),(2,3,5),(1,5,5).

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  13. Find the area of triangle with vertices (1,2,4),(3,1,-2)and(4,3,1).

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  14. Find |veca-vecb|, if two vectors veca and vecb are such that |veca|=2,...

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  15. If |veca|=3, |vecb|=4 and |vecc|=5 and each of them is perpendicular ...

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  16. Prove that {(vecb+vecc)xx(vecc+veca)}.(veca+vecb)=2[veca,vecb,vecc]

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  17. If vec a and vec b are unit vectors and theta is the angle between the...

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  18. For what value of 'lambda' are the following vectors coplanar? : hat...

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  19. For what value of 'lambda' are the following vectors coplanar? : hat...

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  20. veca=hati+hatj+hatk,vecb=2hati-hatj+3hatk,vecc=hati-2hatj+hatk then fi...

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