a) If the image formed by a lens is diminished in size and erect, for all positions of the object, what type of lens is it.? (b)Name the point on the lens through which a ray of light passes undeviated. (c)At what distance from a concave lens of focal length 20 cm, a 6cm tall object be placed so as to obtain its image at 15 cm from the lens? Also, calculate the size of the image formed. Draw the corresponding ray diagram.
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Explanation:
a _ Concave
b _ pole
c_ refer attachment
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