1.

Three vector `vec(A)`,`vec(B)`, `vec(C )` satisfy the relation `vec(A)*vec(B)=0`and `vec(A).vec(C )=0`. The vector `vec(A)` is parallel toA. `vec(B)`B. `vec(C)`C. `vec(B). vec(C)`D. `vec(B)xxvec(C)`

Answer» Correct Answer - D
`vec(A).vec(B)=0rArr vec(A)bot vec(B)` & `vec(A).vec(C)=0rArrvec(A) bot vec(C)`
But `vec(B)xxvec(C)` is perpendicular to both `vec(B)` and `vec(C)` so `vec(A)` is parallel to `vec(B)xxvec(C)`


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