A student focuses the images of a well illuminated distant object on a screen using a convex lens. After that he gradually moves the object towards the lens and each time focuses its image on the screen by adjusting the lens. (i) In which direction-towards the screen or away from the screen, does he move the lens ?(ii) What happens to the size of the image-does it decrease or increase ?(iii) What happens to the image on the screen when he moves the object very close to the lens ?

A student focuses the images of a well illuminated distant object on a

1.	A student focuses the images of a well illuminated distant object on a screen using a convex lens. After that he gradually moves the object towards the lens and each time focuses its image on the screen by adjusting the lens. (i) In which direction-towards the screen or away from the screen, does he move the lens ?(ii) What happens to the size of the image-does it decrease or increase ?(iii) What happens to the image on the screen when he moves the object very close to the lens ?
Answer» (i) Lens towards the screen/screen away from the lens (Note: One mark to be awarded for any other answer) (ii) Increase. (iii) No image on the screen.

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