Calculating Object Height Using a Pinhole Camera

In summary, the conversation discusses the use of a pinhole camera and how to determine the height of an object using the given information. The solution involves drawing a diagram and using similar triangles to find the answer. A link to a website with a diagram is also provided.
  • #1
MoniMini
12
0
I don't have any idea how to go about this...
Please help!:frown:

A pinhole camera produces an image of an object kept at a distance of 100m from the pin hole. If the screen is 10 cm from the pin hole and the image is 5 cm high, what is the height of the object

Any help will be appreciated :smile:

Thank You!
 
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  • #2
Draw the diagram and similar triangles will give you the answer.
 
  • #3
grzz said:
Draw the diagram and similar triangles will give you the answer.

There is no diagram attached to the question :uhh:
 
  • #4
Try the web for a diagram.
 

1. How do you calculate the height of an object using a pinhole camera?

To calculate the height of an object using a pinhole camera, you will need to know the distance from the pinhole to the object (d), the distance from the pinhole to the screen (D), and the height of the object (h). The formula for calculating object height is h = (D/d) * image height.

2. What is a pinhole camera?

A pinhole camera is a simple camera consisting of a light-proof box or container with a small hole on one side and a photosensitive material on the opposite side. The hole acts as the lens, allowing light to enter and form an inverted image on the photosensitive material.

3. Why is a pinhole camera used for calculating object height?

A pinhole camera is used for calculating object height because it creates an accurate and proportionate image of the object due to the principles of light and optics. This allows for precise measurements to be taken and calculations to be made.

4. What are some factors that can affect the accuracy of calculating object height using a pinhole camera?

Some factors that can affect the accuracy of calculating object height using a pinhole camera include the size of the pinhole, the distance between the pinhole and the object, and the distance between the pinhole and the screen. Other factors such as lighting and the quality of the photosensitive material can also impact the accuracy of the calculation.

5. Can a pinhole camera be used to calculate the height of any object?

Yes, a pinhole camera can be used to calculate the height of any object as long as the necessary measurements (distance from pinhole to object, distance from pinhole to screen, and object height) are taken accurately. However, the accuracy of the calculation may vary depending on the size and distance of the object.

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