A cube of side length 1 mm is placed on the axis of a concave mirror at a distance of 45 cm from the pole as shown in the figure. One edge of the cube is parallel to the axis. The focal length of the mirror is 30 cm. Find approximate volume (in $mm^{3}$ ) of the image.

Question

TestHub · Accepted Answer

Apply the mirror formula to the cube center and longitudinal faces.

Use transverse magnification for its height and differential longitudinal magnification for its depth.

The resulting image-volume ratio is 16.

Physics - Geometrical Optics Question with Solution | TestHub

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