In a camera, a convex lens is used. Convex lenses focus light rays to a point, enabling the camera to capture clear and sharp images. By converging light, they ensure that the image formed on the film or sensor is ...
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The human eye forms the image of an object on the retina. The retina is the light-sensitive layer at the back of the eye that captures light and converts it into electrical signals. These signals are then sent to the ...
The function of the iris is to control the amount of light entering the eye. It achieves this by adjusting the size of the pupil, thereby regulating the light that reaches the retina. This ensures optimal lighting conditions for clear ...