For a photosensitive surface, the work function is 3.3 × 10-19 J. Ca – McqOptions

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1.	For a photosensitive surface, the work function is 3.3 × 10-19 J. Calculate the threshold frequency.
A.	15 × 1014 Hz
B.	25 × 1014 Hz
C.	5 × 1014 Hz
D.	55 × 1014 Hz
Answer» D. 55 × 1014 Hz

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