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1. What is the iris ad what's its role in the eye?

  • It is the coloured part of the eye, it controls the intensity of light entering the eye.
  • It is the coloured part of the eye; and does most of the eyes focusing.
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Other questions in this quiz

2. What is the force that keeps something moving in a circle?

  • The centripetal force
  • The velocity force

3. How do you get the maximum moment?

  • You need to push at right angles perpendicular to the object.
  • You need to push at 180 degrees to the object.

4. Pressure in a liquid...

  • Is transmitted equally in all directions.
  • Is transmitted un equally in all dircetions
  • Is transmitted equally in different directions.

5. What is a magnet called when its current can be switched off?

  • An electomagnet
  • A magent


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