Solve this problem 5. A surruce when illuminated by light of frequency 0.90 s - I emits
electrons which can bc stopped by retai4iittg potential of 0.60 V . When the samo
surface is illurninatcd by light of frequency 1.26k 10-15 s -l the required relatching
potential is 2.1 V? Using the data calculate the value of
work function of the
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