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The pressure on a circular plate is measured by measuring the force on the plate and the radius of the plate. If the errors in measurement of the force and the radius are 5 % and 3 % respectively, the percentage of error in the measurement of pressure is

Options

  1. A8
  2. B14
  3. C11
  4. D12

Correct answer

C. 11

Step-by-step solution

We have aligned & p= F A = F R^2 & So, p p 100= F F 100+2 R R 100 & =5+2(3)=5+6=11 & p p 100=11 % aligned

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