Photoelectric EffectHard
Question
The thershold frequency for a photosensitive metal is 3.3 × 1014 . If light of frequency 8.2 × 1014 Hz is incident on this metal, the cut-off voltage for the photoelectron emission is nearly
Options
A.1 V
B.2 V
C.3 V
D.5 V
Solution
According to Eienstein′s photoelectric equation
where,
= Incident frequency
= Thershold frequency
V0 = Cuttoff or stopping potential
or, V0 =
Substituting the given value, we get
where,
= Incident frequency = Thershold frequencyV0 = Cuttoff or stopping potential
or, V0 =
Substituting the given value, we get
Create a free account to view solution
View Solution FreeMore Photoelectric Effect Questions
The momentum of photon of frequency 109 Hz will be -...Let p and E denote the linear momentum and the energy of a photon. For another photon of smaller wavelength (in same med...Surface of sodium is illuminated by a light of 6000wavelength. Work function of sodium is 2.6 eV. Then minimum K.E. of e...Electron has energy of 100 ev what will be its wavelength -...Work of 3.0 × 10-4 joule is required to be done in increasing the size of a soap film from 10cm × 6cm to 10cm ...