Ray Diagrams For Lenses Video Lessons

Concept

# Problem: A thin lens has a focal length of 25.0 cm.(a) Locate the image when the object is placed 26.2 cm in front of the lens. (Enter a negative distance if the image is in front of the lens.)cm from the lens Choose the correct description of the image. (Select all that apply.)a) inverted    b) enlargedc) reald) virtuale) reducedf) upright(b) Locate the image when an object is placed 23.0 cm in front of the lens. (Enter a negative distance if the image is in front of the lens.cm from the lens Choose the correct description of the image. (Select all that apply.)a) invertedb) uprightc) virtuald) reale) reducedf) enlarged

###### FREE Expert Solution

(a)

Lens maker equation:

$\overline{)\frac{\mathbf{1}}{{\mathbf{s}}_{\mathbf{o}}}{\mathbf{+}}\frac{\mathbf{1}}{{\mathbf{s}}_{\mathbf{i}}}{\mathbf{=}}\frac{\mathbf{1}}{\mathbf{f}}}$

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###### Problem Details

A thin lens has a focal length of 25.0 cm.

(a) Locate the image when the object is placed 26.2 cm in front of the lens. (Enter a negative distance if the image is in front of the lens.)

cm from the lens Choose the correct description of the image. (Select all that apply.)

a) inverted

b) enlarged

c) real

d) virtual

e) reduced

f) upright

(b) Locate the image when an object is placed 23.0 cm in front of the lens. (Enter a negative distance if the image is in front of the lens.

cm from the lens Choose the correct description of the image. (Select all that apply.)

a) inverted

b) upright

c) virtual

d) real

e) reduced

f) enlarged