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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:(1) slightly nearer to the lens(2) slightly farther away from the lens(3) very close to the lens(4) very far away from the lens |
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Answer» 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: (1) slightly nearer to the lens (2) slightly farther away from the lens (3) very close to the lens (4) very far away from the lens |
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