Question

Cv A thin convex lens perpendicular to the rays. The imaginary line perpendicular to the lens and running exactly through the center is referred to as the optical axis or principal axis. Note that it is necessary to place the lens on the front half of the table to observe the intended phenomenon. Dim the class lights and observe the refracted rays 21 What is the focal length of the lens? Answer: 13 cm Use a thick block half lens. Place the curved surface toward's the parallel light source. Observe the 2.2 Measured from the flat surface, at what distance do the beams converge? Answer: 4cm (when it is asking for the distance at which the beams converge, is that referring to image it will form) Reverse the orientation of the block such that the flat surface is towards the light source. 2.3 Does the block lense have symmetrical behavior? That is, do the beams converge at the same distance from the flat surface? Why might this be the case? Hint: look at the flat boundary, comment on the refraction which occurs there. I am confused on the answer to this and why that may be the answer. When does a lense converge at the same distance and why does this happen? Place the concave lens on the platform. Again observe the refracted beams. 24 Can you measure the focal length of the lense? If you were to trace the refracted rays backwards (on the same side as the incident beams) would they converge? My answer is no but I am unsure about this?

Answer 1