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If `vec(c )=vec(a)-vec(b)`, which of the following relations among magnitudes cannot be achieved by any choice of `vec(a)` and `vec(b)` ?A. `c=a-b`B. `c gt a, c gt b`C. `c=a+b`D. `c lt a-b` |
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Answer» Correct Answer - D `vec(c )=vec(a)-vec(b) rArrc=sqrt(a^(2)+b^(2)-2ab cos theta)` hence `c_(min)=a-b` and `c` can not be less than `a-b` |
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