geometric optics: crash course physics #38 Published 7 years ago • 865K plays • Length 9:40 Download video MP4 Download video MP3 Similar videos 57:40 geometric optics 10:36 optical instruments: crash course physics #41 15:35 galaxies, part 2: crash course astronomy #39 4:07 crash course physics: geometric optics #1 #rizwanasarwar #physics#crashcourse#ssacademyrizwana