2. A lens whose focal length is 40cm forms a Fraunhofer diffraction pattern due to a slit 0.3mm side. Find the distance of the first secondary maximum from the axis and what is the wavelength is?

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2. A lens whose focal length is 40cm forms a
Fraunhofer diffraction pattern due to a slit 0.3mm
side. Find the distance of the first secondary
maximum from the axis and what is the wavelength is?
Transcribed Image Text:2. A lens whose focal length is 40cm forms a Fraunhofer diffraction pattern due to a slit 0.3mm side. Find the distance of the first secondary maximum from the axis and what is the wavelength is?
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