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What happens when half the lens is covered with a black paper longitudinally?
Wiki User
∙ 11y ago
The convex lens will form complete image of an object, even if its one half is covered with black paper. It can be understood by the following two cases.
Case I
When the upper half of the lens is covered
In this case, a ray of light coming from the object will be refracted by the lower half of the lens. These rays meet at the other side of the lens to form the image of the given object, as shown in the following figure.
Case II
When the lower half of the lens is covered
In this case, a ray of light coming from the object is refracted by the upper half of the lens. These rays meet at the other side of the lens to form the image of the given object, as shown in the following figure.
Wiki User
∙ 13y ago
Wiki User
∙ 12y agoYes the complete image will be formed.This is because the ray of light after refraction will meet each other and image is formed
Wiki User
∙ 15y agoThe image will become less bright. (Try it yourself.) It would be the same if the lower half, or left or right half were covered.
Wiki User
∙ 14y agoIF UPPER HALF OF THE LENS IS WRAPPED WITH A BLACK PAPER THEN THE IMAGE WILL BECOME LESS BRIGHT.IT WILL BE SAME IF THE ANY OTHER HALF WILL COVERED.
Wiki User
∙ 12y agofull image is obtained, but the intensity<brightness> is low
Wiki User
∙ 11y agoThe image becomes dimmer. The sharpness of the image may also change, but this depends on other factors.
Wiki User
∙ 9y agoIt will. But it will be 50% fainter than the original image.
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