my question is how do you determine the height of the image do you have to draw the ray diagram first to scale and then measure physically with a ruler or is there a way to mathematically do it(adsbygoogle = window.adsbygoogle || []).push({});

the formula for calculating magnification of an object is

M=hi/ho (magnification = height of image/height of object)

so here is a sample problem

a 1.5cm high object is 8.0 cm from a converging lens of focal length 2.5 cm

for this the object height is given its 1.5cm and the image height is -0.70cm how do you get that by drawing?

1. The problem statement, all variables and given/known data

2. Relevant equations

3. The attempt at a solution

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# Homework Help: Magnification hi?

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