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Question
An object is placed infront of a lens and a part of the lens is covered, then the intensity of the image formed by the lens will
An object is placed infront of a lens and a part of the lens is covered, then the intensity of the image formed by the lens will
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Solution
The correct option is B decrease
When a part of the lens is covered, the image with the same nature will be formed at the same place by the light rays passing from the uncovered part of the lens. The rays that were passing earlier through the covered region are not passing now, so the intensity of the image will be reduced.
When a part of the lens is covered, the image with the same nature will be formed at the same place by the light rays passing from the uncovered part of the lens. The rays that were passing earlier through the covered region are not passing now, so the intensity of the image will be reduced.
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