I read in a AQA GCSE book that:
A real image is formed by the converging lens if the object is further away from the principal focus/focal point.
I did this experiment in class:
Here is my table of results:
However, from the quotation above, u needs to be larger than v.
- So why in my experiment did I get that u is 15cm and v is 30cm?
Here is what I did in my experiment:
A crossed wire object was placed in front of the ray box. After that, the converging lens was placed 15 cm in front of the ray box. The screen was moved until a clear, real image was visible. The distance from the lens to the screen was measured and recorded. This process was repeated with the following measurements (from the ray box to the lens): 20 cm, 25 cm, 30 cm & 50 cm.
Thanks in advance