Physics · 2021
JEE Main · 26 August 2021, Shift 1 · Q27
White light is passed through a double slit and interference is observed on a screen 1.5 m away. The separation between the slits is 0.3 mm. The…
White light is passed through a double slit and interference is observed on a screen $\displaystyle 1.5$ m away. The separation between the slits is $\displaystyle 0.3$ mm. The first violet and red fringes are formed $\displaystyle 2.0$ mm and $\displaystyle 3.5$ mm away from the central white fringes. The difference in wavelengths of red and voilet light is \_\_\_\_ nm.
Official answer
300
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