diffrence between concave lens and convex lens
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convex lenses are thicker at the middle. ... Rays of light that pass through the lens are spread out they diverge. A concave lens is a diverging lens. When parallel rays of light pass through a concave lens the refracted rays diverge so that they appear to come from one point called the principal focus.
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vaisa lense jiska kinara patla aur bich ka bhag mota hota hai use ugal kese kahte hai . vaisa lense jiska kinara mota aur bich ka bhag patla hota hai use avtal lense kahte hai. ugal lense ke dwara bana pratibimb vastvik aur kalpnik dono hota hai. avtal lense ke dwara bana pratibimb kalpnik hota hai
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