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[" 45.If "vec a=hat i-jvec b=hat i+hat j,bar(c)=hat i+3hat j+5hat k" and "bar(n)" be a unit "],[" vector such that "vec b*vec n=0,vec a.vec n=0" then value of "|vec c.vec n|],[[" is "1," (B) "3],[[" Sol."]," (C) "5," (D) "2]]

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