Question:
The maximum kinetic energy of photoelectrons depends on
The maximum kinetic energy of photoelectrons depends on
Show Hint
Intensity affects current, not kinetic energy.
Updated On: Jul 2, 2026
- work function only
- frequency only
- intensity only
- both work function and frequency
Show Solution
Verified By Collegedunia
The Correct Option is D
Solution and Explanation
Photoelectric equation:
\[
K_{\max} = h\nu - \phi_0
\]
Step 1: Understand dependencies - Depends on incident frequency $\nu$ - Depends on work function $\phi_0$
Step 2: Check options - Intensity affects number of electrons, not energy. - Frequency affects energy linearly. Thus: \[ K_{\max} \text{ depends on both } \nu \text{ and } \phi_0 \] Final Answer: \[ \boxed{(D)} \]
Step 1: Understand dependencies - Depends on incident frequency $\nu$ - Depends on work function $\phi_0$
Step 2: Check options - Intensity affects number of electrons, not energy. - Frequency affects energy linearly. Thus: \[ K_{\max} \text{ depends on both } \nu \text{ and } \phi_0 \] Final Answer: \[ \boxed{(D)} \]
Was this answer helpful?
0
0
Top CBSE CLASS XII Physics Questions
- A boy of mass 50 kg is standing at one end of a, boat of length 9 m and mass 400 kg. He runs to the other, end. The distance through which the centre of mass of the boat boy system moves is
- A capillary tube of radius r is dipped inside a large vessel of water. The mass of water raised above water level is M. If the radius of capillary is doubled, the mass of water inside capillary will be
- A circular disc is rotating about its own axis. An external opposing torque 0.02 Nm is applied on the disc by which it comes rest in 5 seconds. The initial angular momentum of disc is
- A circular disc is rotating about its own axis at uniform angular velocity \(\omega.\) The disc is subjected to uniform angular retardation by which its angular velocity is decreased to \(\frac {\omega}{2}\) during 120 rotations. The number of rotations further made by it before coming to rest is
- A constant power is supplied to a rotating disc. The relationship between the angular velocity $\omega$ of the disc and number of rotations (n) made by the disc is governed by
View More Questions
Top CBSE CLASS XII Photoelectric Effect Questions
- Explain the existence of threshold frequency of incident radiation for photoelectric emission from a given surface.
- Assertion (A): Electrons are ejected from the surface of zinc when it is irradiated by yellow light.
Reason (R): Energy associated with a photon of yellow light is more than the work function of zinc. - In a photoelectric experiment with a material of work function 2.1 eV, the stopping potential is found to be 2.5 V. The maximum kinetic energy of ejected photoelectrons is:
- Mention any three features of results of experiment on photoelectric effect which cannot be explained using the wave theory of light.
- In his experiment on photoelectric effect, Robert A. Millikan found the slope of the cut-off voltage versus frequency of incident light plot to be \( 4.12 \times 10^{-15} \, \text{Vs} \). Calculate the value of Planck’s constant from it.
View More Questions
Top CBSE CLASS XII Questions
- 2, b, c are in A.P. and the range of determinant $\begin{vmatrix}1&1&1\\ 2&b&c\\ 4&b^{2}&c^{2}\end{vmatrix}$ is [2, 16]. Then find range of c is
- A boy of mass 50 kg is standing at one end of a, boat of length 9 m and mass 400 kg. He runs to the other, end. The distance through which the centre of mass of the boat boy system moves is
- A capillary tube of radius r is dipped inside a large vessel of water. The mass of water raised above water level is M. If the radius of capillary is doubled, the mass of water inside capillary will be
- A circular disc is rotating about its own axis. An external opposing torque 0.02 Nm is applied on the disc by which it comes rest in 5 seconds. The initial angular momentum of disc is
- A circular disc is rotating about its own axis at uniform angular velocity \(\omega.\) The disc is subjected to uniform angular retardation by which its angular velocity is decreased to \(\frac {\omega}{2}\) during 120 rotations. The number of rotations further made by it before coming to rest is
View More Questions