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Q. 3

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Physics for Scientists and Engineers: A Strategic Approach with Modern Physics
Found in: Page 990

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Short Answer

A student has built a -long pinhole camera for a science fair project. She wants to photograph her -tall friend and have the image on the film be high. How far should the front of the camera be from her friend?

The distance between both the student's classmate and camera is

See the step by step solution

Step by Step Solution

Step 1: The ray structure of light

The Ray Structure of Light: Light passes at via neat lines called light ray. The light ray will persist indefinitely except if it interacts with substance, in which case it will reflects, refract, disperse, or be consumed. Light rays are emitted by things. Rays are sent out in every dimensions from every spot on the item. When divergent rays are gathered either by pupil and centered just on retina, the person perceives an item (or a picture). If lens, reflectors, and apertures are bigger over , ray optics is acceptable.

Step 2: Data given

Camera's height was .

would be the size of student's buddy.

That picture just on camera has a length of .

Step 3: The distance between the student's friend and the camera

Pictorial representation:

Calculation:

Lets represent the space between both the classmate and device's face. Its identical triangles as in diagram under show how the lengths were linked.

Calculate for

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