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Which of the following is independing of...

Which of the following is independing of the choice of co-ordinate system

A

`vecP+vecQ+vecR`

B

`(P_(x)+Q_(x)+R_(x))hati`

C

`P_(x)hati+Q_(y)hatj+R_(z)hatk`

D

None of these

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The correct Answer is:
A
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ERRORLESS -VECTORS-Exercise
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  2. The value of a unit vector in the direction of vector A=5hat(i)-12hat(...

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  3. Which of the following is independing of the choice of co-ordinate sys...

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  4. A car travles 6km towards north at an angle of 45^(@) to the east and ...

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  5. Given that vecA+vecB+vecC=0, out of three vectors two are equal in mag...

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  6. Two forces F(1)=1N and F(2)=2N act along the lines x=0 and y=0, respec...

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  7. At what angle must the two forces (x+y) and (x-y) act so that the resu...

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  8. Following forces start acting on a particle at rest at the origin of t...

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  9. The resultant of vec(A)+vec(B) is vec(R )(1). On reversing the vector ...

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  10. Figure below shows a body of mass M moving with the uniform speed on a...

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  11. A particle is moving on a circular path of radius r with uniform veloc...

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  12. vecA=2hati+4hatj+4hatk and vecB=4hati+2hatj-4hatk are two vectors. The...

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  13. If vecA=2hati+3hatj-hatk and vecB=-hati+3hatj+4hatk then projection of...

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  14. Two constant forces F(1)=2hati-3hatj+3hatk(N) and F(2)=hati+hatj-2hatk...

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  15. For the any two vecrtors vecA and vecB, if vecA.vecB=|vecAxxvecB|, the...

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  16. Which of the following is the unit vector perpendicular to vecA and ve...

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  17. Two vectors P=2hati+bhatj+2hatk and Q=hati+hatj+hatk will be parallel ...

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  18. Which of the following is not true? If vecA=3hati+4hatj and vecB=6hati...

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  19. The area of the triangle formed by 2hati+hatj-hatk and hati+hatj+hatk ...

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  20. Two trains along the same straight rails moving the constant speed 60k...

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