1.

A beam of electron is used `YDSE` experiment . The slit width is d when the velocity of electron is increased ,thenA. (a) no interference is observedB. (b) fringe with increasesC. (c) fringe width decreasesD. (d) fringe width remains same

Answer» Correct Answer - B
Momentum of the electron will increase. So the wavelength `(lambda=h//p)` of electron will decrease and fringe width decreases as `betaproplambda`


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