- #1
richnfg
- 46
- 0
This is probably a stupidly easy question, but I'm confused so I need to ask about it.
I have this experiment I was doing where I have a light source at one end (which is enclosed in a casing and only let's light get out in the shape of an arrow because of an arrow shaped hole) and a screen at the other. In between is a lens and I move it to get the image of the arrow on the screen in focus. I notice I can get two points of focus, one where the arrow is diminished (smaller) and where it is magnified (larger).
Also, when I move the screen to 40cm from the light source I only seem to be able to get one in focus image, which I cannot decide is diminished or magnified.
I'm very confused as to why this happens, any help would be great.
Thanks!
I have this experiment I was doing where I have a light source at one end (which is enclosed in a casing and only let's light get out in the shape of an arrow because of an arrow shaped hole) and a screen at the other. In between is a lens and I move it to get the image of the arrow on the screen in focus. I notice I can get two points of focus, one where the arrow is diminished (smaller) and where it is magnified (larger).
Also, when I move the screen to 40cm from the light source I only seem to be able to get one in focus image, which I cannot decide is diminished or magnified.
I'm very confused as to why this happens, any help would be great.
Thanks!