QJEEM20Phd531: JEE Main 2020 Physics - Class 12 JEEM20Phd531 Solution: In a Young's double slit experiment 15 fringes are observed on…

In a Young's double slit experiment 15 fringes are observed on a small portion of the screen when light of wavelength 500 nm is used. Ten fringes are observed on the same section of the screen when another light source of wavelength $$\lambda$$ is used. Then the value of $$\lambda$$ is (in nm) __________.