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Physics · 2017
JEE Main 2017 · 2017-04-02 Offline · Q23
In a Young's double slit experiment, slits are separated by 0.5 mm, and the screen is placed 150 cm away. A beam of light consisting of two…
In a Young's double slit experiment, slits are separated by $\displaystyle 0.5$ mm, and the screen is placed $\displaystyle 150$ cm away. A beam of light consisting of two wavelengths, $\displaystyle 650$ nm and $\displaystyle 520$ nm, is used to obtain interference fringes on the screen. The least distance from the common central maximum to the point where the bright fringes due to both the wavelengths coincide is :
Official answer
(2)
7.$\displaystyle 8$ mm
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