Year: 2020
Topic: Dual nature of radiation and matter
Time :
1.
An electron is accelerated from rest through a potential difference of V volt. If the de Broglie wavelength of the electron is \(1.227 × 10^2nm\) the potential difference is:
(1). \(10^2V\)
(2). \(10^3V\)
(3). \(10^4V\)
(4). \(10V\)