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The angle between vecA=hati+hatj and vec...

The angle between `vecA=hati+hatj` and `vecB=hati-hatj` is

A

`45^@`

B

`90^@`

C

`-45^@`

D

`180^@`

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Verified by Experts

The correct Answer is:
B
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PATHFINDER-VECTOR-I AND VECTOR-II-QUESTION BANK
  1. Can you associate vectors with a plane area ?

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  2. Can you associate vectors with a sphere ? Explain

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  3. The angle between vecA=hati+hatj and vecB=hati-hatj is

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  4. Which one of the following statements is true ?

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  5. The component of vector vecr along X-axis will have maximum value if :

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  6. Consider the quantities : pressure, power, energy, impulse, gravitatio...

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  7. Three vector vecA,vecB and vecC add up to zero. Find which is false ?

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  8. It is found that abs(vecA+vecB)=absvecA. This necessarily implies : v...

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  9. It is found that abs(vecA+vecB)=absvecA. This necessarily implies : v...

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  10. It is found that abs(vecA+vecB)=absvecA. This necessarily implies : v...

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  11. It is found that abs(vecA+vecB)=absvecA. This necessarily implies : v...

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  12. If force F varies with displacement x as F=3x^2+4. The rate of change ...

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  13. If velocity v depends on time t as v=-t^2+3t+1 (where is in second). A...

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  14. If the volume of sphere increases at constant rate Q,then the surface ...

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  15. If the current I in resistor R varies with time t as I= a sin t (where...

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  16. The magnitude of vectors vecA,vecB and vecC are respectively 12,5 and ...

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  17. A particle is moving in a circle of radius r centre at O with constant...

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  18. Two vector vecA=2hati+3hatj-4hatk and vecB=4hati+8hatj+xhatk are such ...

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  19. A vector is not changed if :

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  20. What is the angle between vectorP and the cross product of (vecP+vecQ)...

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