Question

A lensmaker wants to make a magnifying glass from glass with $n=1.55$ and with a focal length of $20.0 \mathrm{~cm} .$ If the two surfaces of the lens are to have equal radii, what should that radius be?

Name: A lensmaker wants to make a magnifying glass from glass with n=1.55 and with a focal length of 20.0 cm . If the two surfaces of the lens are to have equal radii, what should that radius be?
Uploaded: 2022-03-24T02:51:28-08:00
Duration: 2 min 48 s
Channel: Christopher Dzorkpata
Description: A lensmaker wants to make a magnifying glass from glass with n=1.55 and with a focal length of 20.0 cm . If the two surfaces of the lens are to have equal radii, what should that radius be?

          A lensmaker wants to make a magnifying glass from glass with $n=1.55$ and with a focal length of $20.0 \mathrm{~cm} .$ If the two surfaces of the lens are to have equal radii, what should that radius be?

Added by Kristina M.

University Physics with Modern Physics

Hugh D. Young 14th Edition

Instant Answer

Solved by Expert Christopher Dzorkpata

03/24/2022

Step 1

Step 1: Use the lens maker's equation, which is given by $\frac{1}{f} = (n-1)\left(\frac{1}{R_1} - \frac{1}{R_2}\)$, where $f$ is the focal length, $n$ is the refractive index of the lens material, and $R_1$ and $R_2$ are the radii of curvature of the two surfaces Show more…

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A lensmaker wants to make a magnifying glass from glass with $n=1.55$ and with a focal length of $20.0 \mathrm{~cm} .$ If the two surfaces of the lens are to have equal radii, what should that radius be?