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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

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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