Question: difference between focal point of concave and convex mirrors? 

Answer: Concave mirror has the focal point on the reflecting side of it. Incoming light rays parallel to the principal axis of a concave mirror converge at the focal point after reflection.\n\nConvex mirror has the focal point on the the non-reflecting side of it. Incoming light rays parallel to the principal axis of a convex mirror seem to diverge from the focal point after reflection.
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