F=0.05 м f=2 м Г=?
1/F=1/d+1/f d=F*f/(f-F)=0.05*2/(2-0.05)=0.0513 м
Г=f/d=2/0.0513=39
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F=0.05 м f=2 м Г=?
1/F=1/d+1/f d=F*f/(f-F)=0.05*2/(2-0.05)=0.0513 м
Г=f/d=2/0.0513=39
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