Quiz_22b - Physics 241 Quiz 22b April 17, 2008 Light of...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Physics 241 Quiz 22b April 17, 2008 Light of wavelength in air is incident normal to a thin layer of oil film floating on water as shown. If the reflection is suppressed (dark) by interference of rays 1 and 2, what is a possible thickness d of the oil film? phase change by 1 2 a) /(4n1) b) /4 c) /(2n1) d) /2 e) 3/4 No phase change oil (n1>1.33) water (n=1.33) 2d = mglass = m / n1 ...
View Full Document

Ask a homework question - tutors are online