question_answer 2)

Suppose you are given a chance to repeat the alpha-particle scattering experiment using a thin sheet of solid hydrogen in place of the gold foil. (Hydrogen is a solid at temperature 14 K). What results do you expect ? 

Answer:

Here                                 Also (a) Maximum   kinetic   energy   of photoelectrons is K.E. = hv - W  (b) Stopping potential is given by (c)