Physics · 2020
JEE Main · 9 January 2020, Shift 2 · Q24
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…
In a Young's double slit experiment $\displaystyle 15$ fringes are observed on a small portion of the screen when light of wavelength $\displaystyle 500$ nm is used. Ten fringes are observed on the same section of the screen when another light source of wavelength $\displaystyle \lambda$ is used. Then the value of $\displaystyle \lambda$ is (in nm )
\_\_\_\_.
Official answer
750
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