A source of light is located at a distance \( I=90 \mathrm{~cm} \) from a screen. A thin converg... VIDEO
A source of light is located at a distance \( I=90 \mathrm{~cm} \) from a screen. A thin converging lens provides the sharp image of the source when placed between the source of light and the screen at two positions. Determine the focal length of the lens ifhttps://bit.ly/YTAI_PWAP https://www.pw.live
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