55
Question
An electron beam is being used in YDSE. On increasing kinetic energy of the electrons, fringe width will:
An electron beam is being used in YDSE. On increasing kinetic energy of the electrons, fringe width will:
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Solution
The correct option is B Decrease
Fringe width is directly proportional to wavelength of wave. If we increase the kinetic energy of the electrons, since the de – Broglie wavelength of the electron beam will reduce, the fringe width will also decrease.
Fringe width is directly proportional to wavelength of wave. If we increase the kinetic energy of the electrons, since the de – Broglie wavelength of the electron beam will reduce, the fringe width will also decrease.
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