what is concave mirror ?
Sometimes referred to as a converging mirror, the concave mirror is made with a surface that bends inward. Because the center of the curve is directed away from any incident light, it creates a reflection that is typically larger than the actual focal point.........
A concave mirror can be very helpful around the house as well. Men may use one while shaving, since the device will provide a magnified image of the beard line. Women often use one while applying makeup for its magnifying properties as well, since the larger image can make detailed makeup much easier to apply.
i hope u help dis answer...:)