Year: 2019
Topic: Dual nature of radiation and matter
Time :
1.
An electron is accelerated through a potential difference of 10,000 V.Its de Broglie wavelength is, (nearly) \(\left(m_e= 9 × 10^−31kg\right)\)
(1). \(12.2\,nm\)
(2). \(12.2 \times 10^{−13}\,m\)
(3). \(12.2 \times 10^{−12}\,m\)
(4). \(12.2 \times 10^{−14}\,m\)