Mathematics · Optics Calculations

The distance between an object and its 3 times magnified real image produced by a spherical mirror is 40 cm. The focal length of the mirror used is _____ cm.

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The distance between an object and its 3 times magnified real image produced by a spherical mirror is 40 cm. The focal length of the mirror used is _____ cm.

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The distance between an object and its 3 times magnified real image produced by a spherical mirror is 40 cm. The focal length of the mirror used is _____ cm.

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