physics!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! help,,...,.,.!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!?

Question

pinhole camera..................move a pinhole camera closer to or farther from a lamp...waht do you observe on the screen?how would you explain it?
do you think you can make the image on the screen in other positions?HOW?

Answer 1

The way to see how a pinhole camera works is to draw a diagram showing an object arrow at position a, the pinhole at position b, and the image screen at position c. To find out where any part of the object arrow will be imaged on the screen, draw a straight line from that part through the pinhole and to the screen. Using geometry, you will see the following:

The closer the object to the pinhole, the larger the image on the screen.

The closer the image screen is to the pinhole, the smaller the image is on the screen

The image is inverted, so the image will move in the opposite direction of the object: if the object moves upward, the image moves downward.