Explain with the help of a diagram what is concave mirror
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When a parallel beam of light, also parallel to the principle axis, is incident on a concave mirror, it reflects from the mirror and meets at a point called the focus (F) of the concave mirror. So, a concave mirror has a real focus. Ray diagram- A concave mirror converges a parallel beam of light rays.
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If the reflecting surface of a spherical mirror is inside the sphere or concave it is called a concave mirror.
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