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let veca=hati+hatj+sqrt2hatk vecb=b1hat...

let `veca=hati_+hatj+sqrt2hatk` `vecb=b_1hati+b_2hatJ+sqrt2hatk` `vecc=5hati+hatj+sqrt2hatk` & `(veca+vecb)` is perpendicular to `vecc` and projection vector of `vecb` on `veca` is `veca` then find `|vecb|` (a) `6` (b) `sqrt(22)` (c) `sqrt(32)` (d) `11`

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