Q11.27Multiple choice
A student performs an experiment on photoelectric Vstop (V) A B effect, using two materials A and B. A plot of Vstop vs ν is given in Fig. 11.2. 3 2.5
This question refers to a figure in the original PDF.
- (i)Which material A or B has a higher work 2 function? 1.5
- (ii)Given the electric charge of an electron 1 = 1.6 × 10–19 C, find the value of h obtained from the experiment for both A and B. 5 × 1014 10 × 101415 × 1014 Comment on whether it is consistent with Frequency (Hz) Einstein’s theory: Fig. 11.2