Question

нσℓα!!



The ground state energy of H - atoms is 13.6 eV .The energy needed to ionize H - atom from its second excited state is _________

(A) 1.5 eV
(B) 3.4 eV
(C) 13.6 eV
(D)12.1 eV​

Answer 1

Explanation:

Carbon has a work function of 5.0 eV. When monochromatic light of frequency 3.22 1015 Hz is shined onto a carbon surface, what is the maximum velocity of the photoelectrons that are released? Let 1 eV 1.60 1019 , the mass of an electron

9.11 x 10-31 kg, and Planck's constant h = 4.136 1o-15 eV s.