I cannot show all the detail, but roughly, what sort of image should appear on t

Question

I cannot show all the detail, but roughly, what sort of image should appear on the screen for a y-shaped bulb, and a triangular aperture? If the bottom half of the triangular aperture in the figure above is covered what happens to the resulting figure? a) The top half of the image is gone b) The bottom half of the image is gone c) The image is about half the size but otherwise the same d) The image has narrower lines but is practically the same otherwise e) The image is now two somewhat disjointed parts

Explanation / Answer

Image through a pinhole is inverted (upside down) and lateral y inverted(right becomes left in image).

The distortion of image depends on focal length of pinhole.

C is correct asit is inverted both ways.

16.

a,b are absolutely wrong. Its just a smaller pinhole.

Intensity of light reduces,a s size is reduced,generally crisp image is formed.

D is correct,a s distortion is redced.

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