Threshold frequency, f o = 5.5 × 1014 Hz, ‘h’ = 6.626 × 10-34 Js
${\phi}$ = h f = 5.5 × 1014× 6.626 × 10-34 = 36.4 × 10-20
Mutiso answered the question on October 17, 2018 at 06:01
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