1.

The number of vectors of unit length perpendicular to the vectors a→=2i^+j^+2k^ and b→=j^+k^ is(a) one (b) two (c) three (d) infinite

Answer» The number of vectors of unit length perpendicular to the vectors a=2i^+j^+2k^ and b=j^+k^ is

(a) one

(b) two

(c) three

(d) infinite


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