An object 4 cm in height, is placed at 15 cm in front of concave mirror of focal length 10 cm

An object 4 cm in height, is placed at 15 cm in front of concave mirror of focal length 10 cm. At what distance from the mirror should a screen be placed to obtain a sharp image of the object? Calculate the height of the image.

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Using the mirror equation,

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Thus, to obtain a sharp image of the object the screen should be placed in front of the mirror at a distance of 30 cm from the mirror.
Magnification:
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