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You have a lens whose focal length is 6.91 cm. You place an object on the axis of the lens at a distance of 11.1 cm from it. How far is the object\'s image from the lens?

Respuesta :

Answer:

4.2591 cm

Explanation:

We have given focal length of the lens f=6.91 cm

Object distance u =11.1 cm

We have to find the image distance that is v

For the lens we know that [tex]\frac{1}{f}=\frac{1}{v}-\frac{1}{u}[/tex]

So [tex]\frac{1}{6.91}=\frac{1}{v}-\frac{1}{11.1}[/tex]

[tex]0.1447=\frac{1}{v}-0.09[/tex]

[tex]\frac{1}{v}=0.2347[/tex]

[tex]v=4.2591cm[/tex]

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