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Which of the following represents a unit...

Which of the following represents a unit vector ?

A

`(|vecA|)/A`

B

`vecA/(|vecA|)`

C

`vecA/vecA`

D

`(|vecA|)/(|vecA|)`

Text Solution

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The correct Answer is:
B
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AAKASH INSTITUTE-MOTION IN A PLANE-Assignement section -A Objective (one option is correct)
  1. The vector quantily among the following is

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  2. vecA + vecB can also be written as

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  3. Which of the following represents a unit vector ?

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  4. A vetor is added to an equal and oppsite vector of similar nature,form...

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  5. Unit vector does not have any

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  6. The displacement of a particle from a point having position vector 2h...

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  7. What is the angle between velocity vector and acceleration vector in u...

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  8. The magnitude of hati + hatj is

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  9. Three forces given by vectors 2hati + 2hatj. 2hati -2hatj and - 4hatj...

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  10. the angle made by the vector sqrt2i + hati with x-axis body from its ...

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  11. A Body moves 6m north, 8m east and 10m vertically upwards, what is its...

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  12. A particle has an initial velocity of 3hati + 4hatj and on accelerati...

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  13. A vector multiplied by the number 0, results into

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  14. The resultant of two vectors makes an angle of 60^(@) with one vecto...

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  15. The position vector of an object at any time t is given by 3t^(2) hati...

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  16. A body lying initially at point (3,7) starts moving with a constant ac...

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  17. The initial position of an object at rest is given by 3 hati - 8 hatj....

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  18. If |vecP + vecQ|= | vecP| -|vecQ| , the angle between the vectors ve...

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  19. if |vecP + vecQ| = |vecP| + |vecQ| , the angle between the vectors ...

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  20. if vecP a+ vecQ =vec0 , then which of the following is necessarily t...

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