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11-if A+Bǐs a unit vector along xaxis and A-i-j-k, then what is B ?(a) j+k(b) j-K(d)i-i-k |
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Answer» A + B = unit vectors so, we can just check from the alternative given as in option B A+B = (i-j+k) +(j-k) = i ... a unit vector so, option B mera vi aaya tha lekin option diya hai d |
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