Question
You want to view through a magnifier an insect that is 2.00 mm long. If the insect is to be at the focal point of the magnifier, what focal length will give the image of the insect an angular size of 0.032 radian?
Step 1
Step 1: We are given that the angular size of the image of the insect is given by $\theta' = \frac{y}{f}$, where $y$ is the object height and $f$ is the focal length. Show more…
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$\cdot$ You want to view an insect 2.00 $\mathrm{mm}$ in length through a magnifier. If the insect is to be at the focal point of the magnifier, what focal length will give the image of the insect an angular size of 0.025 radian?
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