Question

In an experiment using double slits, eight fringe spacing are found to occupy a distance of 0.40m. The screen is at 50cm from the slits. The wavelength of light is 700nm.
i. Calculate the fringe spacing.
ii. Calculate the separation of slits.
iii. State the two differences when the pattern seen when the double slits and diffraction gratings are used.​

Answer 1

Answer:

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