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5. Parallel light of wavelength 730.4 nm is incident normally on a slit 0.3850 mm wide.
A lens with a focal length of 50.0 cm is located just behind the slit bringing the
diffraction pattern to focus on a white screen. Find the distance from the centre of the
principal maximum to:
2
a. The second maximum
b. The second minimum.
09
Son D=

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