Answer to Question #49100 in Optics for abdul
3. A student has a convex lens of unknown focal length. He lights a candle in a darkened room and uses the
lens and moves the screen until he forms a sharp image and records the distance from the candle to the lens
and the distance from the lens to the screen. Below is a sketch of his set-up and his data.
(a) What type of image is formed and what orientation is it?
(b) Where is the image formed if the candle is placed 7 cm from the lens?
(c) Use ray tracing to make a sketch when the object is 7 cm from the lens.
(d) What effect would it have if only a shard of the same lens was used, instead of the entire lens?
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