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The vectors vecP = ahati + ahatj+ 3hatk ...

The vectors `vecP = ahati + ahatj+ 3hatk and vecQ = ahati-2hatj-hatk` are perpendicular to each other. The positive value of ‘a’ is

A

zero

B

1

C

2

D

3

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The correct Answer is:
D
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PATHFINDER-VECTOR-I AND VECTOR-II-QUESTION BANK
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  2. The angle between vecP+vecQ and vecP-vecQ will be

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  3. The vectors vecP = ahati + ahatj+ 3hatk and vecQ = ahati-2hatj-hatk ar...

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  4. The value of n so that vectors 2hati+3hatj-2hatk, 5hati+nhatj+hatk and...

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  5. If veca and vecb are two vectors then the value of (veca+vecb)xx(veca-...

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  6. The angle between the two vectors vecA=3hati+4hatj+5hatk and vecB=3hat...

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  8. Which of the following expressions are meaningful ?

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  11. If y=sinx, then dy/dx=0, for x=

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  12. For the condition x^2-1gt0, we have

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  17. which of the following statement(s) is (are) correct?

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