Q4 of 29 Page 68

Consider Fig. 11.7 in the NCERT text book of physics for Class XII. Suppose the voltage applied to A is increased. The diffracted beam will have the maximum at a value of that

If V is the voltage applied to A and is the wavelength of the beam,


Also, for electrons diffracted at an angle ,


2dsin =


Hence, if V increases decreases and a result decreases.

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