58.  mmh The distance between an object and its image formed by a diverging lens is 49.0 cm. The focal length of the lens is - 233.0 cm. Find (a) the image distance and (b) the object distance.

 

 

In this case we have

Remember image distance will be negative since the image is virtual.

Solve for object distance

 

Lens equation

 

Now solve for i

 

 

 

 

 

So solving the quadratic formula

 

 

 

 

Since this is a virtual image we need to use the negative distance so

 

We find the object distance from

 

 

 

 

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This page last updated on July 6, 2018