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If in the previous example, we use a div...

If in the previous example, we use a diverging lens with a focal length `10.0cm` to form an image of the pencile kept 15 cm in front of the lens, locate and characterize the image.

Text Solution

Verified by Experts

In accordance with cartesian sign convention, the given parameters are
`f=-10cm, u=-15cm`
From lens equation, we have
`=(1)/(v)-(1)/(f)+(1)/(u)`
` =(1)/((-10))+(1)/((-15))=-(1)/(6),v=-6cm`
Lateral magnification `m=(v)/(u)=(-6)/(-15)=0.40`
The minus sign with image shows that the image is located on the side of the object. The magnification is positive and `m lt 1` , which shows that the image is upright and diminished.
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