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  • A converging lens of focal length is placed coaxially in contact with a diverging lens of focal length <img alt="f_{2} (f_{1} > f_{2} )" src="https://learn.careers360.com/

A converging lens of focal length f_{1} is placed coaxially in contact with a diverging lens of focal length f_{2} (f_{1} > f_{2} ). Determine the power and nature of the combination in terms of f_{1} and f_{2} .

 

 
 
 
 
 

Answers (1)

\\\frac{1}{f}=\frac{1}{f_1}-\frac{1}{f_2}\\P=\frac{f_2-f_1}{f_1f_2}\\since\ f_2<f_1\\P\ is\ negative.\\Therefore \ the \ lens \ is \ diverging

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