d=0.3 м f=0.6 м
D=5 дптр Г=2 d=? f=?
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Г=f/d=2
f=2*d
D=1/F=1/d+1/f=1/d+/(2*d)=3/(2*d)
d=3/(2*D)=3/(2*5)=0.3 м
f=2*0.3=0.6 м
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d=0.3 м f=0.6 м
D=5 дптр Г=2 d=? f=?
===
Г=f/d=2
f=2*d
D=1/F=1/d+1/f=1/d+/(2*d)=3/(2*d)
d=3/(2*D)=3/(2*5)=0.3 м
f=2*0.3=0.6 м