# theoretical optics

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Whereb must an object be placed from a concave mirror of radius of curvature of 6cm. to give an image on a screen four times as large as the object

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A man 1.5 meter tall stands in front of a concave mirror whose radius is 30cm. Find the osition of the man that will lead his image on the screen 20 cm from the mirror. How big is the man's image

• theoretical optics -

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