In a photoelectric-effect experiment, if ‘f’ is the frequency of incident radiation on the metal surface and I is the intensity of the incident radiation, then

If ‘f’ is increased, keeping I and work function constant, then stopping potential and maximum kinetic energy of photoelectron increases.

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

If distance between cathode and anode increases, stopping potential remains same.

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

If ‘I’ is increased keeping ‘f’ and work function constant, saturation current increases but stopping potential remains same.

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Work function is decreased keeping f and I constant. Then, stopping potential and maximum kinetic energy of photoelectrons increases.

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Open in App

Solution

The correct options are
A If ‘f’ is increased, keeping I and work function constant, then stopping potential and maximum kinetic energy of photoelectron increases.
B If distance between cathode and anode increases, stopping potential remains same.
C If ‘I’ is increased keeping ‘f’ and work function constant, saturation current increases but stopping potential remains same.
D Work function is decreased keeping f and I constant. Then, stopping potential and maximum kinetic energy of photoelectrons increases.

If 'I' and work function are kept constant, then stopping potential and maximum kinetic energy of photoelectron increases.
Stopping potential is independent of the distance between cathode and anode.
If work function is decreased keeping f and I constant then, stopping potential and maximum kinetic energy of photoelectrons increases.
IF work function is decreased keeping f and I constant. Then, stopping potential and maximum kinetic energy of photoelectrons increases.

Suggest Corrections

Similar questions

$\begin{matrix} C o l u m n I & C o l u m n I I (A) If v (frequency) is increased keeping I (intensity) and Φ (work function) constant & (P) Stoping potential increases (B) If I is increased keeping v and Φ constant & (Q) Saturation photocurrent increases (C) If the distance between anode and cathode increases. & (R) Maximum KE of the photoelectrons increase (D) If Φ is decreased keeping v and I constant & (S) Stopping potential remains the same \end{matrix}$

Q. In a photocell, frequency of incident radiation is increased by keeping other factors constant

(v > v_{0})

the stopping potential

Q. Explain giving reasons for the following :
(a) Photoelectric current in a photocell increases with the increase in the intensity of the incident radiation.
(b) The stopping potential

(V_{0})

varies linearly with the frequency (

ν

) of the incident radiation for a given photosensitive surface with the slope remaining the same for different surfaces.
(c) Maximum kinetic energy of the photoelectrons is independent of the intensity of incident radiation.

If in a photoelectric experiment, the wavelength of incident radiation is reduced from 6000 $A^{\circ}$ to 4000 $A^{\circ}$ then

When monochromatic light of intensity I and frequency $v = 3 v_{0}$ ( $v_{0}$ is the threshold frequency) is incident on the cathode in a photoelectric experiment setup the saturation current is found to be $2 μ A$ and the stopping potential is $V_{0}$ . The photoelectric efficiency of the photo metal used to coat the cathode is independent of the frequency of incident radiation. If the Intensity of the incident radiation is doubled and its frequency halved then choose the correct statement(s).

Join BYJU'S Learning Program