Modern Physics 2 Question 27

26. The work functions of silver and sodium are 4.6 and 2.3eV, respectively. The ratio of the slope of the stopping potential versus frequency plot for silver to that of sodium is

(2013 Adv.)

Show Answer

Solution:

  1. eV0=hf−W

∴V0=hef−We

V0 versus f graph is a straight line with slope =he=a universal constant. Therefore, the ratio of two slopes should be 1 .

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