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A student performs an experiment on photoelectric effect, using two materials A and B. A plot of Vstopversus v is given in figure. Which has higher work function?

0 1 View | Posted 3 months ago
Asked by Shiksha User

  • 1 Answer

  • P

    Answered by

    Pallavi Pathak | Contributor-Level 10

    3 months ago

    Explanation -Given threshold frequency of A is given by v0A= 5 *1014 hz

    VOB= 10 * 1014hz

    ?=hv0

    ?OA?OB=5*101410*10141

    ?OA < ?OB

    (ii)  for metal A slope=h/e= 2(10-5)1014

    h=2e5*1014=2*1.6*10-195*1014 = 6.4 *10-34 js

    formetalB slope=h/e= 2.5(15-10)1014 = 8 *10-34 js

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