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AP EAMCET202022 Sep 2020Morning ShiftMathematicsVector AlgebraActual

If a , b and c are three vectors such that a b = c , b c = a and a , b , c are mutually perpendicular to each other, then | b | is equal to

Options

  1. A-1 only
  2. B0 only
  3. C1 only
  4. D1

Correct answer

C. 1 only

Step-by-step solution

It is given that a , b and c are mutually perpendicular vectors, such that a b = c and b c = a . So, (b c) b=c (b b) c -( b c ) b = c b b = l | b |^2= l | b |= l

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