A. 8.58 x 10-19 J
B. 8.50 x 10-15 J
C. 8.58 x 10-17 J
D. 8.85 x 10-18 J
Correct Answer: Option A
Explanation
Work function, w = hfo = 6.6 x 10-34 x 1.3 x 1015
= 8.58 x 10-19
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