To find the image-distance for varying object-distance in case of a convex lens, a student obtains on a screen a sharp image of a bright object placed very far from the lens. After that he gradually moves the object towards the lens and each time focuses its image of the screen. (a) In which direction-towards or away from the lens, does he move the screen to focus the object? (b) What happens to the size of image - does it increase or decrease ? (c ) What happens when he moves the object very close to the lens ?

To find the image-distance for varying object-distance in case of a co

1.	To find the image-distance for varying object-distance in case of a convex lens, a student obtains on a screen a sharp image of a bright object placed very far from the lens. After that he gradually moves the object towards the lens and each time focuses its image of the screen. (a) In which direction-towards or away from the lens, does he move the screen to focus the object? (b) What happens to the size of image - does it increase or decrease ? (c ) What happens when he moves the object very close to the lens ?
Answer» SOLUTION :(a) AWAY from the lens (b) Increases (C ) No image is formed on the SCREEN.