Stopping Potential

Mediumphysics

Stopping potential V0 relates to K_max by?

Select the correct option:

$e V 0 = K_{m} a x$

$V 0 = e K_{m} a x$

$e / V 0 = K_{m} a x$

$e V 0 = K_{m} a x^{2}$

🔒 Solution Hidden from View

Submit your answer to unlock the detailed step-by-step solution.

About This Question

Subject: physics
Chapter: dual nature
Topic: stopping potential
Difficulty: Medium
Year: 2025

Solution

Correct Answer:

$e V 0 = K_{m} a x$

Definition of Stopping Potential ( $V_{0}$ ): The negative potential applied to the collector plate that is just sufficient to stop the fastest moving photoelectrons from reaching it.
Energy Relation: At the stopping potential, the work done by the retarding electric field on the electron must equal its maximum kinetic energy.
Equation: $W = q V ⟹$ Energy $= e V_{0}$ .
Final Link: $K_{ma x} = e V_{0}$ .
Combined Equation: $e V_{0} = h f - ϕ$ , which allows for experimental determination of Planck's constant.

This medium difficulty physics question is from the chapter dual nature, covering the topic of stopping potential. It appeared in the 2025 exam.

Looking for more practice? Explore all physics questions or browse dual nature questions on RankGuru.

Stopping Potential

Select the correct option:

🔒 Solution Hidden from View

More dual nature Practice Questions

In a photoelectric experiment the fastest electrons emitted from a cathode are found to have a maxim...

Slope of plot of stopping potential vs frequency (above threshold) gives?

Photon energy expressed as?

At same kinetic energy, which has longer de Broglie wavelength?

Particle momentum in terms of de Broglie wavelength λ?

Increasing intensity above threshold changes?

Electron accelerated through potential V has de Broglie wavelength λ = ?

Existence of threshold frequency explained because?

Wave-particle duality means particles exhibit?

Photon momentum p equals?

Compton effect demonstrates?

de Broglie wavelength λ of particle momentum p is?

About This Question

Solution