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MHT CET202019 Oct 2020Morning ShiftPhysicsMathematics in PhysicsActual

If a unit vector is represented as u =0 4 +0 7 + c k , then the value of ' c ' is

Options

  1. A0 11
  2. B0 25
  3. C0 65
  4. D0 35

Correct answer

D. 0 35

Step-by-step solution

(D) 0.4²+0.7²+c² =1 Thus, c ²=1-0.65=0.35 , or c = 0.35

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