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Let bara=-overset(^)i-overset(^)k,barb=-...

Let `bara=-overset(^)i-overset(^)k,barb=-overset(^)i+overset(^)j and barc =overset(^)i+2overset(^)j+3overset(^)k`
be three given vectors. If `barr` is a vector such that
`barrxxbarb=barcxxbarb and barr. bara=0`, then the value of `barr.barb` is

A

(a) `4`

B

(b) `8`

C

(c) `6`

D

(d) `9`

Text Solution

Verified by Experts

The correct Answer is:
D
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