Calculate the de broglie wavelength of an electron accelerated from rest through a potential difference of (a) 100 v, (b) 1.0 kv, (c) 100 kv.

(a)

(b)

(c)

Explanation:

Given that,

(a) An electron accelerated from rest through a potential difference of 100 V. The De Broglie wavelength in terms of potential difference is given by :

Where

m and e are the mass of and charge on an electron

On solving,

V = 100 V

(b) V = 1 kV = 1000 V

(c) If

Hence, this is the required solution.

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