In a Photoelectric Experiment,the Threshold Frequency for a Material Is $\times$

question 73

Multiple Choice

In a photoelectric experiment,the threshold frequency for a material is 3.2 $\times$ 10¹⁴ Hz.An electron ejected from this surface by a photon of frequency 9.4 $\times$ 10¹⁴ Hz can be stopped by a stopping potential of

• A)8.5 mV
• B)1.6 V
• C)0.26 nV
• D)2.6 V
• E)3.6 kV

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