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How camera works

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How camera works

Posted by Kartik Sharma 4 years, 5 months ago

CBSE > Class 09 > Science

1 answers

Yogita Ingle 4 years, 5 months ago

Working of a pinhole camera

Place a luminous object such as a burning wick (XY) of the candle in front of the pinhole, an inverted picture X’Y’ of the wick is obtained on the wax paper. This picture is called the image.
The image obtained is inverted.
Such an image is formed because the light travels in a straight path. Hence, light from the upper point X of the wick passes through the pinhole and strikes the wax paper at X’.
Similarly, light from the lower point Y of the wick passes through the pinhole and strikes the wax paper (or screen) at Y'.
When light from all other points between X and Y passes through the pinhole they strike the wax paper in between X' and Y'. Hence, an inverted image is formed on the wax paper.

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