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Optical instruments questions

Optical instruments questions | form three Physics

Find Optical instruments examination questions, form three Physics in acaproso.com

# Question
1

Magnification is defined by……..


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2

Explain two ways in which lens cameras differ from the human eye.


Short answers
3

What role does the iris play in the human eye?

  1. To hold the lens in position.
  2. To prevent internal reflection.
  3. To control the size of the pupil.
  4. To control the thickness of the lens.
  5. To protect the eye from light.

Multiple choices
4

A camera is used to take a close-up picture of an object 3cm tall. If the object is positioned 24cm in front of the lens and a focused image is formed on the film 12cm behind the lens, determine the focal length of the camera lens and the height of the image formed on the film.


Short answers