Spherical mirror produces an image of magnification-1 on a screen placed at a distance of 50cm from mirror
1. Write the type of mirror
2. Find distance of image from object and it's it's focal length
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Solution
(a) Concave Mirror (b) The distance of image from the object is zero, i.e. a real inverted image of the same size is formed at the same place where object is placed. (Actually the object is placed at the centre of curvature). ( Focal length of the mirror f = R/2 = - 50 cm/2 = - 25 cm.(according to sign convention)