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Let bara=2bari+barj-2bark,barb=bari+barj...

Let `bara=2bari+barj-2bark,barb=bari+barj`. If `barc` is a vector such that `bara.barc=abs(barc),abs(barc-bara)=2sqrt2` and the angle between `(baraxxbarb)` and `barc` is `30^(@)`, then `abs((baraxxbarb)xxbarc)=`

A

`2/3`

B

`3/2`

C

2

D

3

Text Solution

Verified by Experts

The correct Answer is:
B
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AAKASH SERIES-MULTIPLE PRODUCT OF VECTORS-EXERCISE -II
  1. If bara =bari -2barj-3bark,barb =2bari + barj-bark, barc = bari +3barj...

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  2. If vecbara=2bari+3barj-4bark,vecb=bari+barj+bark,vecc=4bari+2barj+3bar...

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  3. Let bara=2bari+barj-2bark,barb=bari+barj. If barc is a vector such tha...

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  4. If baraxx(barbxxbarc)=(baraxxbarb)xxc' then which of the following is ...

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  5. If bara,barb are two units vectors inclined at an angle pi/3 then {axx...

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  6. sum[(baraxxbari)xxbarj]^(2)=

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  7. [barb barc barbxxbarc]+{barb.barc}^(2)=

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  8. If bara=bari+barj-bark,barb=bari-barj+bark,barc is a unit vector perpe...

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  9. (barbxxbarc).(axxbard)+(barcxxbara).(barbxxbard)+(baraxxbarb).(barcxxb...

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  10. If bara is parallel to barbxxbarc then (baraxxbarb).(baraxxbarc))=

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  11. If bara, barb lie in a plane, normal to the plane containing barc, bar...

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  12. [(baraxxbarb)xx(barbxxbarc)(barbxxbarc)xx(barcxxbara)(barcxxbara)xx(ba...

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  13. If barA=baraxxbarb,barB=barbxxbarc,barC=barcxxbara then barAxx(barBxxb...

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  14. Given that barc is in the plane of bara, barb and bard is not iri the ...

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  15. [barbxxbarcbarcxxbarabaraxxbarb]=[barabarbbarc]^(k) then k=

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  16. If bara, barb, barc are non-coplanar, non zero vectors then (baraxxbar...

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  17. [barb barc bard]bara-[bara barc bard]barb+[bara barb bard]barc-[bara b...

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  18. (baraxxbari).(barjxxbark)+(baraxxbarj).(barkxxbari)+(baraxxbark).(bari...

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  19. If bara, barb, barc, bard are any four vectors then (baraxx barb) xx (...

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  20. If bara,barb,barc are coplanar vectors then (baraxxbarb)xx(barbxxbarc)...

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