Question
In an experiment, electrons are made to pass through a narrow slit of width $$‘d’$$ comparable to their de Broglie wavelength. They are detected on a screen at a distance $$‘D’$$ from the slit (see figure).
In an experiment, electrons are made to pass through a narrow slit of width $$‘d’$$ comparable to their de Broglie wavelength. They are detected on a screen at a distance $$‘D’$$ from the slit (see figure).
Which of the following graphs can be expected to represent the number of electrons $$‘N'$$ detected as a function of the detector position $$‘y’$$ ($$y = 0$$ corresponds to the middle of the slit)
A.
B.
C.
D.
Answer :
Solution :
The electron beam will be diffracted and the maxima is obtained at $$y = 0.$$ Also the distance between the first minima on both side will be greater than $$d.$$
The electron beam will be diffracted and the maxima is obtained at $$y = 0.$$ Also the distance between the first minima on both side will be greater than $$d.$$