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Question on: WAEC Physics - 1999

A metal has work function of 4.375 eV Calculate its threshold frequency. (h = 6.6 x 10-34Js; 1eV = 1.6 x 10-19J)
A
2.01 X 1015Hz
B
1.06x1015Hz
C
6.30 x 1014Hz
D
1.60 x 1014Hz
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Correct Option: B

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