Question:
A soap film of thickness $0.0011 \mathrm{~mm}$ appears dark when seen by the reflected light of wavelength $580 \mathrm{~nm}$. What is the index of refraction of the soap solution, if it is known to be between $1.2$ and $1.5$ ?
Solution:
Click here to get exam-ready with eSaral
For making your preparation journey smoother of JEE, NEET and Class 8 to 10, grab our app now.