Recent content by S2100595

Alright never mind. This is my first post and I didn't realize there are so many restrictions and rules about how I can post on this forum.

I have re-written how I intend to solve it

I know a sketch diagram is required for the question but they haven't specified the distance from the beam to the lens. They've just given the height of the beam. So how do I know how far I should place the object? Should the object (beam) be at infinity?