Physics, 29.08.2019 03:00 mathisaqeosmw

The light bulb in your room is not very bright. you want to use a concave mirror to direct its illumination into a tight, parallel beam of light for reading. the radius of curvature of the mirror is 30 centimeters. at what distance from the mirror should you place the light bulb to produce this parallel light beam

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The light bulb in your room is not very bright. you want to use a concave mirror to direct its illum...