Dual Nature Of Light Question 171
Question: Electrons are emitted from an electron gun at almost zero velocity and are accelerated by an electric field E through a distance of 1.0 m. The electrons are now scattered by an atomic hydrogen sample in the ground state. What should be the minimum value of E so that red light of wavelength $ 656.3nm $ may be emitted by the hydrogen? If its value is $ a\times 6.05eV $ . Find the value of a.
Solution:
Answer: 2.00
BETA
