Question

in YDSE, an electron beam is used to obtain interference pattern . if speed of electrons is increased

correct option was- distance between two consecutive fringes will decrease.

how? explain.?

Answer 1

$$\begin{gathered} \lambda =h/mv; \\ visincreased \\ \lambda willdecrease \\ therefore,\beta =\lambda D/dwilldecrease. \end{gathered}$$