# Find the object distances (in terms of f ) for a thin converginglens of focal length f if (a) the image is real and theimage distance is four times the focal length and (b) theimage is virtual and the absolute value of the image distanceis three times the focal length. (c) Calculate the magnificationof the lens for cases (a) and (b).

Question
Asked Dec 26, 2019
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Find the object distances (in terms of f ) for a thin converging
lens of focal length f if (a) the image is real and the
image distance is four times the focal length and (b) the
image is virtual and the absolute value of the image distance
is three times the focal length. (c) Calculate the magnification
of the lens for cases (a) and (b).

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Step 1

a)

For converging lens

Step 2

b)

...

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