Monochromatic blue light (lambda = 448 nm) passes through a mask with two thin s

Question

Monochromatic blue light (lambda = 448 nm) passes through a mask with two thin slits. Each slit has a width of 7.0 mum and the two slits are separated by 41.0 mum. an example fringe pattern How far from the mask should we place a screen such that the interferece fringes have a 1.0 cm spacing? How far from the center spot is the first diffraction minimum? How many interference fringes make up the central bright group? An electron passes through a circular opening of diameter 0.9 nm forming a diffraction pattern with the first minima located at 24.8 degree . What is the de Broglie wavelength of this what is the de barogil wavelength of this electron. What is the momentum of this electron? What is the kinetic energy of this electron? Before passing through the opening, this electron was accelerated from rest by a parallel plate capacitor. What was the potential difference between the plates of the capacitor?

Explanation / Answer

1ans) 100 cm

2ans) 1 cm

3ans) 1

4ans) 0.755 nm

5ans) 26.33*(10^-17) Hz

6ans) 0.038 J

7ans) 4,1*(10^28) V

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