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
A given shaped glass tube having uniform cross-section is filled with water and is mounted on a rotatable shaft as shown...Maximum kinetic energy (Ek) of a photoelectron varies with the frequency (n) of the incident radiation as :-...Surface of sodium is illuminated by a light of 3000 wavelength. Work function of sodium is 2.6 eV. Then maximum K.E. of ...If h is the planck′s constant, the momentum of a photon of wavelength 0.01 is :...On increasing the filament current in X-ray tube :-...