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How far from the lens must the film in a camera be, if the lens has a 35.0 $\mathrm{mm}$ focal length and is being used to photograph a flower 75.0 $\mathrm{cm}$ away? Explicitly show how youfollow the steps in the Problem-Solving Strategy for lenses.

3.67 $\mathrm{cm}$

Physics 103

Chapter 25

Geometric Optics

Reflection and Refraction of Light

Rutgers, The State University of New Jersey

University of Michigan - Ann Arbor

University of Washington

University of Winnipeg

Lectures

02:51

In physics, wave optics is…

10:02

Interference is a phenomen…

01:27

A camera lens has a focal …

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A camera with a 50.0 $\mat…

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02:14

A certain camera lens has …

02:19

. A camera with a 90 -mm-f…

00:52

A camera with a 50.0 -mm l…

02:12

Suppose your 50.0 $\mathrm…

03:03

When a camera is focused, …

01:35

A camera lens with a focal…

01:11

The focal length $f$ of a …

01:25

For a camera equipped with…

02:33

You photograph a 2.0-m-ta…

01:53

01:51

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03:48

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00:33

the camera has got a convex lens. So, um, this is a principal access. It will take light from an object and will focus here. So the side on which the lens focuses, Um, a light That side will be a past. You, in the hope of the site, will be an active, um, So using this convention for lens, then we could write Let's formula that is one of our focal length is equal to one over the, um, size off the image minus one or size off the object. Um, that position's already not the size. So position off the image minus one over position off the object. So we have here of the focal length for our camera is a 35 millimeters. And then, uh so this one I wrote the Q also So this should be a p. P. So this one is a P. Then I will bring this one here, and then this will end up, and where we pee is given for the flower issues. 750 on that is equal to one working. Then simplifying this expression we get a cure is equal. Thio 33.4 mm So, um, the flame will be placed at the distance off a 33.4 millimeter in a camera for the focal length over 35. End off the problem. Thank you for watching.

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