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If `vecA xx vecB = vecC+ vecD`, them select the correct alternative:A. `vecB` is parallel to `vecC + vecD.`B. `vecA` is perpendicular to `vecC.`C. Component of `vecC` along `vecA` = component of `vecD` along `vecA`D. Component of `vecC` along `vecA =` - component of `vecD` along `vecA` |
Answer» Correct Answer - D According to definition of cross-product `vec(C)+vec(D)` is perpendicular to both `vec(A)andvec(B)` i.e., `vec(A).(vec(C)+vec(D))=0orvec(A). vec(C)+vec(A).vec(D)=0` or A (component of `vec(C)` along `vec(A)`) + A(component of `vce(D)` along `vec(A)`)=0 or component of `vec(C)` along `vec(A)` =- component of `vec(D)` along `vec(A)` |
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