Answer the following questions in detail.
a) On which principle does a pinhole camera work? What is the nature and
colour of the image formed by a pinhole camera?
Answers
The image formed by a pinhole camera is inverted and smaller in size when compared to the original object. These cameras work on the principle that light travels in a straight line.
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Answer:
Pinhole cameras rely on the fact that light travels in straight lines – a principle called the rectilinear theory of light. This makes the image appear upside down in the camera. The focal length of a pinhole camera.
The image in a pinhole camera has the following characteristics: The image in a pinhole camera is inverted (upside down) as compared to the object. The image in a pinhole camera is real (because it can be formed on a screen). The image in a pinhole camera is of the same colour as the object.