A Franhoffer diffraction pattern due to a single slit of width 0.2 mm is being obtained on a screen placed at a distance of 2 m from the slit. The first minima lie at 5mm in either side of the centre maximum on the screen. Find the wavelength of the light used .

A Franhoffer diffraction pattern due to a single slit of width 0.2 mm

1.	A Franhoffer diffraction pattern due to a single slit of width 0.2 mm is being obtained on a screen placed at a distance of 2 m from the slit. The first minima lie at 5mm in either side of the centre maximum on the screen. Find the wavelength of the light used .
Answer» ANSWER :5000 Å

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A Franhoffer diffraction pattern due to a single slit of width 0.2 mm is being obtained on a screen placed at a distance of 2 m from the slit. The first minima lie at 5mm in either side of the centre maximum on the screen. Find the wavelength of the light used .

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