quantum phenomena ( particles )

Question 1

formula for Ekmax

Answer 1

Ekmax = hf - workfunction

Question 2

define workfunction

Answer 2

minimum energy needed for electrons to be emitted

Question 3

what would happens if the work function decreased from its itial work function

Answer 3

as workfunction decreases the Ek max would increase so electron would have more kinetic energy
Ekmax is proportional to the stopping potential so stopping potential would also increase

Question 4

explain why energy levels are negative

Answer 4

work must be done to move a free electron from that point