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1/f=½(1/24+1/16)
1/f=½(2/48+3/48)
1/f=5/96
f=19,2cm=0,192m
1/f=1/d+1/y
1/y=1/f-1/d
y=fd:(x-f)
y=0,2m
p=y/d -powiekszenie
p=0,04
p=h₁/h
h₁=ph
h₁=0,12m -wysokość obrazu