Spherical Surfaces & Thin Lenses
Which of the following measurements require 'index correction'?
Show answer and solution
Answer: (d)
- On an optical bench, the scale readings of the uprights need not equal the actual distance between the lens and the needle tips.
- This difference is the index error, so an index correction is applied to object and image distances.
- So the answer is (d) measurement of focal length of lenses using optical bench.