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Question

Which fact can be established by a pinhole camera?
  1. Light travels in straight lines
  2. Images are always inverted
  3. Image gets inverted when the light travels through a hole
  4. No specific conclusion

A
Image gets inverted when the light travels through a hole
B
Images are always inverted
C
No specific conclusion
D
Light travels in straight lines
Solution
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In a pinhole camera, light travels in a straight line and forms an image.

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