1.

What is the change in the image observed as the object is moved from infinity towards concave lens​

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Answer:

when the position of the object is at infinity then the SIZE of the IMAGE is highly diminished and point size when it is at BEYOND C it is diminished when it is at C the image formed is same size when the object is between the centre of curvature and focus the image formed is enlarged when it is at focus the image formed is highly enlarged when the object is between focus and Pole the image formed is enlarged.

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