Lenses. Please help! iPad 1 of 3 11:44 PM 2. A camera uses a converging lens to

Question

Lenses. Please help!

iPad 1 of 3 11:44 PM 2. A camera uses a converging lens to focus light on a flat, light-sensitive material (screen). Assuming the camera is perfectly focused on an object that is five times the focal length distant, describe how each of the following situations would affect the resulting photographs. a) Half the camera lens is covered-draw a ray diagram on the figure below to support your explanation object he f b) The camera lens has been replaced with one that has twice the focal length c) The camera lens has been replaced with a diverging lens that has the same magnitude focal length as the converging lens originally in the camera. 3. Real world optical systems, such as telescopes, use a combination of multiple lenses within their system. In the case of a two-lens system as shown on the next page, the image of the object generated by the first lens (L1) becomes the object for the second lens (L2). a) The lenses are identical with a power of 6.67 D. What is the focal length? 47% CD

Explanation / Answer

a)the image would not shift but its intensity will be less

b)the image would be closer to the lens and it would be blurry/unfocussed

c)no image will be formed

3.)focal length=1/D=15cm

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