A student perform an experiment in a lab where he gets the image of a distance tree on the wall by using lens. a).Name the type of the lens used. b)What will be the sign convention of focal length of the lens?
c).Give the nature and size of the image formed.
d).Draw a ray diagram for the same.
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1. Convex lens.
2. Positive.
3. The image is real and inverted and small in size.
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