(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A boy scout starts a fire by using a lens from his eyeglasses to focus sunlight on kindling 5.2 cm from the lens. The boy scout has a near point of 15.2 cm. When the lens is used as a simple magnifier, give values for the following conditions. (Hint: Assume a "normal" eye.)

(a) What is the maximum magnification that can be achieved

(b) What is the magnification when the eye is relaxed

2. Relevant equations

1/p + 1/q = 1/f

Mmax= 1+ 25cm/f

3. The attempt at a solution

I used p=+5.2 and q= -(15.2)-((1/2)5.2)=-17.8

then 1/5.2 - 1/17.8 +1/f

f= 7.34

so, Mmax= 1+ 25/7.34= 4.406 but that is wrong?!?

can anyone help?

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# Homework Help: Simple magnifier problem

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