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MHT CET202311 May 2023Evening ShiftMathematicsVector AlgebraActual

If a =2 i +3 j +2 k , b =2 i + j - k and c =3 i - j are such that a + b is perpendicular to c , then the value of is

Options

  1. A-1 5
  2. B3
  3. C3 5
  4. D-3 5

Correct answer

D. -3 5

Step-by-step solution

According to the given condition, we get array ll & ( a + b ) c =0 & [(2+2 ) i +(3+ ) j +(2- ) k ] (3 i - j )=0 & 3(2+2 )-(3+ )=0 & 6+6 -3- =0 & 3+5 =0 & = -3 5 array

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