Q.
If the eighth bright band due to light of wavelength $\lambda_{1}$ coincides with ninth bright band from light of wavelength $\lambda_{2}$ in Young’s double slit experiment, then the possible wavelength of visible light are
A) $400\ nm$ and $450\ nm$
B) $425\ nm$ and $400\ nm$
C) $400\ nm$ and $425\ nm$
D) $450\ nm$ and $400\ nm$
Explanation
The correct answer is Option D: $450\ nm$ and $400\ nm$.
A detailed explanation for this question is being prepared.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.