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Statement1: A component of vector vecb =...

Statement1: A component of vector `vecb = 4hati + 2hatj + 3hatk` in the direction perpendicular to the direction of vector `veca = hati + hatj +hatk is hati - hatj`
Statement 2: A component of vector in the direction of `veca = hati + hatj + hatk is 2hati + 2hatj + 2hatk`

A

Both the statements are true and statement 2 is the correct explanation for statement 1.

B

Both statements are true but statement 2 is not the correct explanation for statement 1.

C

Statement 1 is true and Statement 2 is false

D

Statement 1 is false and Statement 2 is true.

Text Solution

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The correct Answer is:
c

Component of vector `vecb = 4hati + 2hatj +3hatk ` in the direction of `veca=hati +hatj +hatk is (veca.vecb)/ (|veca|) veca/ (|veca|) or 3hati + 3hatj + 3hatk `. Then componant in the direaction perpendicular to the direction of `veca =hati+hatj + hatk "is " vecb -3hati + 3hatj +3hatk= hati -hatj`
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CENGAGE-DIFFERENT PRODUCTS OF VECTORS AND THEIR GEOMETRICAL APPLICATIONS -Exercise
  1. A parallelogram is constructed on the vectors veca=3vecalpha-vecbeta, ...

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  2. Statement 1: Vector vecc = -5hati + 7 hatj + 2hatk is along the bisec...

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  3. Statement1: A component of vector vecb = 4hati + 2hatj + 3hatk in the ...

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  4. Statement 1: Distance of point D( 1,0,-1) from the plane of points A( ...

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  5. Let vecr be a non - zero vector satisfying vecr.veca = vecr.vecb =vecr...

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  6. Statement 1: If a(1)hati + a(2)hatj + a(3)hatk, b(1)hati+b(2)hatj + b(...

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  7. Statement 1: vecA=2hati + 3hatj + 6hatk , vecB=hati + hatj - 2hatk and...

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  8. Statement 1: veca, vecb and vecc are three mutually perpendicular unit...

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  9. Consider three vectors veca , vecb and vecc Statement 1: vecaxxvecb ...

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  10. Let vecu, vecv and vecw be three unit vectors such that vecu + vecv + ...

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  11. Let vecu, vecv and vecw be three unit vectors such that vecu + vecv + ...

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  12. Let vecu, vecv and vecw be three unit vectors such that vecu + vecv + ...

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  13. Vectors vecx,vecy,vecz each of magnitude sqrt(2) make angles of 60^0 w...

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  14. vertors vecx , vecy and vecz each of magnitude sqrt2 , make an angle ...

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  15. vertors vecx , vecy and vecz each of magnitude sqrt2 , make an angle ...

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  16. If vecx xx vecy=veca, vecy xx vecz=vecb, vecx.vecb=gamma, vecx.vecy=1 ...

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  17. Find the derivative of y = cos^-1(1 − x).

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  18. Find the derivative of y = sin^-1(1 − x^2).

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  19. Given two orthogonal vectors vecA and VecB each of length unity. Let v...

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  20. Given two orthogonal vectors vecA and VecB each of length unity. Let v...

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