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Which of the following is meaningless ?...

Which of the following is meaningless ?

A

`(baraxxbarb).(barcxxbard)`

B

`(baraxxbarb)xx(barcxxbard)`

C

`(bara.barb)(barcxxbard)`

D

`(bara.barb)xx(barcxxbard)`

Text Solution

Verified by Experts

The correct Answer is:
D
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AAKASH SERIES-MULTIPLE PRODUCT OF VECTORS-PRACTICE EXERCISE
  1. Which of the following are meaningful ?

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  2. Which of the following is meaningless ?

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  3. If bara.bari = 4 then (bara xx barj).(2barj - 3bark) =

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  4. [baribarjbark]+[barjbarkbari]+[barkbaribarj]+[baribarkbarj]+[barjbarib...

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  5. If [veca vecb vecc]=1 then (bara.(barbxxbarc))/((barcxxbara).barb)+(...

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  6. If bara,barb,barc are non-coplanar vectors and (bara+2barb+barc).(bara...

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  7. If bara, barb, barc are the sides of a triangle ABC then [barabarb bar...

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  8. If the vectors abari+barj+bark,bari+bbarj+bark,barI+barj+cbarK are cop...

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  9. If the vectors (a, b, c), (b, c, a) and (c, a, b) are linealy dependen...

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  10. The volume of a parallelopiped whose edges are represented by -12bari+...

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  11. The volume of the rectangular box whose coterminal edges along axes of...

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  12. If barx.bara=barx.barb=barx.barc=0 for some non-zero vector barx and a...

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  13. The volume of the tetrahedron having the edges barI+2barj-bark,bari+ba...

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  14. If bara,barb are non-zero and non-collinear vectors then [bara barb ba...

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  15. Which of the following statement is not true

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  16. If bara is perpendicular to barbxxbarc, then which of the following is...

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  17. barixx(barjxxbark)+barjxx(barkxxbari)+barkxx(barixxbarj)=

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  18. barixx(barixxbara)+barjxx(barjxxbara)+barkxx(barkxxbara)=

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  19. If barb, barc are like unit vectors and baraxx (barbxx barc) = bar0 th...

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  20. If bara, barb are two unit perpendicular vectors then baraxx (baraxx b...

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