The anode voltage of a photocell is kept fixed. The wavelength λ of the light falling on the cathode is gradually changed. The plate current I of photocell varies as follows

Question

The anode voltage of a photocell is kept fixed. The wavelength λ of the light falling on the cathode is gradually changed. The plate current I of photocell varies as follows (A)  (B)  (C)  (D)

Tardigrade Admin · Accepted Answer

As λ is increased, there will be a value of λ above which photoelectron will cease to come out. So, photocurrent will be zero.

Q. The anode voltage of a photocell is kept fixed. The wavelength $λ$ of the light falling on the cathode is gradually changed. The plate current $I$ of photocell varies as follows

As $λ$ is increased, there will be a value of $λ$ above which
photoelectron will cease to come out. So, photocurrent will be zero.

Q. The anode voltage of a photocell is kept fixed. The wavelength λ of the light falling on the cathode is gradually changed. The plate current I of photocell varies as follows

As λ is increased, there will be a value of λ above which photoelectron will cease to come out. So, photocurrent will be zero.

Q. The anode voltage of a photocell is kept fixed. The wavelength $λ$ of the light falling on the cathode is gradually changed. The plate current $I$ of photocell varies as follows

As $λ$ is increased, there will be a value of $λ$ above which
photoelectron will cease to come out. So, photocurrent will be zero.