n=1.5 (стекло) R1=0.2 м R2=0.3 м F=?
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1/F=(n-1)*(1/R1 + 1/R2)=(1.5-1)*(1/0.2 + 1/0.3)=4.17
F=1/4.17=0.24 м
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n=1.5 (стекло) R1=0.2 м R2=0.3 м F=?
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1/F=(n-1)*(1/R1 + 1/R2)=(1.5-1)*(1/0.2 + 1/0.3)=4.17
F=1/4.17=0.24 м
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