Explanation:
For a concave mirror, when an object is placed exactly at the center of curvature (C), the image is also formed at C. The image is real (can be captured on a screen), inverted (upside down), and exactly the same size as the object. Magnification in this specific case is exactly -1.
Explanation:
Mirage occurs due to refraction of light through air layers of different temperatures (densities) and total internal reflection when ray tries to go from denser to rarer medium at grazing incidence. It's an optical illusion, not real water.
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