Photoelectric EffectMedium
Question
Which one of the following is true in photoelectric emission
Options
A.Photoelectric current is direct proportional to the amplitude of light of a given frequency
B.Photoelectric current is directly proportional to the intensity of light of a given frequency above threshold value
C.Above threshold frequency, the maximum K.E. of photoelectrons is inversely proportional to the frequency of incident light
D.The threshold frequency depends upon the wavelength of incident light
Solution
For thershold frequency, hv = 
⇒ v0 = 
⇒ KEmax = hv - = h(v - v0)
Isaturation ∝ n where I = nhv
⇒ v0 = ⇒ KEmax = hv -
= h(v - v0)Isaturation ∝ n where I = nhv
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