if the angle between the incident ray and reflected ay is 120 degrees, what is the angle of reflectio?
4 answers
if you have usd a camera, you may have noticed that you can not have both a close object and a distant object in focus at the same time. Why not?
α= β =>
α + β=2 β =120⁰
β=60⁰
α + β=2 β =120⁰
β=60⁰
engineering science
30 degrees