Question

ex lenses.
c) If a transparent ruler is held in sunlight you see various colours. Explain.
od learning​

Answer 1

Answer:

it's due to refraction of light

explanation ---- when light colloids on the surface of ruler the speed of light changes due one medium to another medium (air) --(surface of ruler)..

and it becomes dispersion of light and we see different colours of light....

i hope it helps you...