00:01
In this question, we have a flashlight, and then inside the flashlight, a small light bulb is used with a converging mirror.
00:11
And what we need is that the light bulb from the lights from the bulb would emerge as a tight beam of light, a series of parallel rays.
00:21
So, and we want to find out where the belt be placed relative to the mirror.
00:26
So we want our outgoing rays to be parallel, so which means that if we look at the tree, light rays that we draw for converging mirror, we are looking at this rule, which is an incoming ray that passes through the focal point, reflects back parallel to the axis.
00:47
Okay, so which means that we kind of need some kind of mirror that with the bump here.
00:54
Okay, and then you light is shining onto the spherical mirror and then it will show up.
01:03
It will go in this way.
01:07
Okay, so this is kind of like this is the idea...