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1. Use a ray diagram to show the image of an object 30 cm away from a convex lens with focal length 12cm. Describe the image fully and give the magnification/reduction.

2. A concave lens has a focal length of 8cm. Draw a ray diagram to show the formation of an image. Describe the image fully and give the magnification/reduction.

3. A convex lens with a focal length of 5cm is used as a magnifying glass. An ant is placed 3cm from the lens. Draw a ray diagram to show that the image is virtual, upright and magnified. Find the position of the image and the magnification.

4. A camera lens has focal length 55mm and an object is 500mm away. a) Calculate the position of the image and the magnification (or reduction). b) Why is no image formed if the object is placed at the focal point?
c) At what distance from an object must the camera lens be placed if the image isi to be the same size as the object?

5. Explain how different mirror geometries can form both real and virtual images.

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  • Category:- Physics
  • Reference No.:- M91610784

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