Some identical thin convex lenses are arranged at edge of a full circle of radius R, according to the picture below. The lenses have equal angle spacing of θ (θ<<1). Each lens has aperture length of D (D<<R).Find the longest focus distance, f, of the lenses so that it is possible to trap a ray of light inside the circle!

Click here to read the solution.

Trapping LensesSocialTwist Tell-a-Friend


UX Designers Delhi said... @ February 24, 2016 at 8:13 PM

Awesome work.Just wanted to drop a comment and say I am new to your blog and really like what I am reading.Thanks for the share

Gst Consultants Delhi said... @ October 7, 2016 at 10:35 PM

This is wonderful. I am not quite familiar with the internet, but I believe that what I just read is some good material. Thanks for continuing to write such wonderful articles. God bless.

App Development Company Gurgaon said... @ October 13, 2016 at 2:40 AM

Very interesting blog. A lot of blogs I see these days don't really provide anything that much interesting, but I'm most definitely interested in this one. Just thought that I would post and let you know.

Post a Comment