1.

While performing an experiment on determining the focal length of a convex lens, a student obtains a sharp inverted image of the laboratory window grill on the screen and measures the distance between the screen and the lens. She then repeats the experiment and takes a distant tree as the object in the second case. In order to get a sharp image of the tree on the screen, she will now have to move the screen :

Answer»

slightly nearer to the lens
slightly FARTHER AWAY from the lens
very close to the lens
very far away from the lens

Solution :NA


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