what do you think you know about physics, physics is the study of matter under the effect of energy, but does this includes solid states bodies, atoms at ground states, object at microscopic size or object moving faster than light? these and more is what prompt me to ask again what is physics?
If the diameter of a lens is reduced what happens to the brightness of image produced by the lens
As the diameter of the lens reduces, the quality of the image
reduces, if the image was bright by reducing the diameter the image will be blurred
, larger diameter allow more light rays from the object to fall on the lens and
hence a clearer image.
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