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Question

Let I be the moment of inertia of a uniform square plate about an axis AB that passes through its centre and is parallel to two of its sides. CD is a line in the plane of the plate that passes through the centre of the plate and makes an angle  with AB. Then the moment of inertia of the plate about the axis CD is equal to :

  1. I
  2. I sin squared invisible function application theta
  3. I cos squared invisible function application theta
  4. I cos squared invisible function application left parenthesis theta divided by 2 right parenthesis

The correct answer is: I


    I subscript. B end subscript equals 1 over 6 m l squared equals I subscript C B end subscript text  (irrespectiv an angle)  end text

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