11 What is the minimum thickness of an oil film on a surface

Last updated: 5/4/2023

11 What is the minimum thickness of an oil film on a surface of water which will appear black if illuminated from air with light of 5 0x10 4 Hz frequency noil 1 65 nwater 1 33 a 152 nm b 130 nm c 211 nm d 182 nm Ie 167 nm