State the mirror formula for determining the focal length of spherical mirrors. Write the meanings of the symbols used. An object is placed at a distance of 25 cm. from a concave mirror of a focal length of 15 cm. Calculate the distance, position and nature of the image from the mirror. Draw the corresponding ray diagram.
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Answer:
1/ (object image) = 1/(image distance) + 1/ (focal length)
focal length= curvature/2
the equations are:
1/0 + 1/1 = f/1
F= 2/r
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