Modern Physics 7 Question 35
36. A beam of electron is used in an YDSE experiment. The slit width is . When the velocity of electron is increased, then
(a) no interference is observed
(b) fringe width increases
(c) fringe width decreases
(d) fringe width remains same
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Solution:
- As velocity ( or momentum) of electron is increased, the wavelength
will decrease. Hence, fringe width will decrease .