A) \[10\times {{10}^{14}}Hz\]
B) \[5\times {{10}^{14}}Hz\]
C) \[1\times {{10}^{14}}Hz\]
D) \[20\times {{10}^{14}}Hz\]
Correct Answer: B
Solution :
p-n photodiode is a semiconductor diode that produces a significant current when illuminated. It is reversed biased but is operated below the breakdown voltage. Energy of radiation = band gap energy ie, \[hv=2.0\text{ }eV\] or\[v=\frac{2.0\times 1.6\times {{10}^{-19}}}{6.6\times {{10}^{-34}}}\approx 5\times {{10}^{14}}Hz\]
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