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## The stopping potential V 0A. Depends upon the surface nature of the substanceB. Is independent of the intensity of the incident lightC. Depends upon the intensity of incident lightD. Depends upon the angle of incident light

The stopping potential V 0A. Depends upon the surface nature of the substanceB. Is independent of the intensity of the incident lightC. Depends upon the intensity of incident lightD. Depends upon the angle of incident light

I vs V - Varying Intensity

The stopping ... Question

The stopping potential

( V 0 ) A

Depends upon the angle of incident light

B

Depends upon the intensity of incident light

C

Depends upon the surface nature of the substance

D

Is independent of the intensity of the incident light

Open in App Solution

The correct option is B Is independent of the intensity of the incident light

Stopping potential depends upon the energy of photon

Suggest Corrections 3

SIMILAR QUESTIONS

Q.

Stopping potential for photoelectrons

Does not depend on the frequency of the incident light

Does not depend upon the nature of the cathode material

Q. Assertion : Kinetic energy of photo electrons emitted by a photosensitive surface depends upon the intensity of incident photon.

Reason : The ejection of electrons from metallic surface is possible with frequency of incident photon below the threshold frequency.

Q. Which of the following quantity related to a lens depends upon the wavelength or wavelengths of incident light?Q. Assertion :The strength of photoelectric current depends upon the intensity of incident radiation. Reason: A photon of energy E possesses a mass equal to

E / c 2

and momentum equal to E/c.

Q. When light of sufficiently high frequency is incident on a metallic surface, electrons are emitted from the metallic surface. This phenomenon is called photoelectric emission. Kinetic energy of the emitted photoelectrons depends on the wavelength of incident light and is independent of the intensity of light. Number of emitted photoelectrons depends on intensity.

( h ν − ϕ )

is the maximum kinetic energy of emitted photoelectrons (where

ϕ

is the work function of metallic surface). Reverse effect of photo emission produces X-ray. X-ray is not deflected by electric and magnetic fields. Wavelength of a continuous X-ray depends on potential difference across the tube. Wavelength of characteristic X-ray depends on the atomic number. If potential difference across the tube is increased then:

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I vs V - Varying Intensity

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I vs V - Varying Intensity

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## Stopping potential for photoelectrons

Join / Login Class 12 >>Physics

>>Dual Nature of Radiation and Matter

>>Photocell and Probability Interpretation to Matter Waves

>>Stopping potential for photoelectrons

Question

A

B

C

D

## Depends upon the intensity of the incident light

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Updated on : 2022-09-05

Solution Verified by Toppr

Correct option is C)

Stopping potential for photoelectrons depends on both the frequency of the incident light and nature of the cathode material.

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8 0 SIMILAR QUESTIONS

### Light wavelength 300nm in incident on a photosensitive surface. The stopping potential for emitted photoelectrons is 2.5V. The wavelength of incident light is reduced to 150nm. The stopping potential of emitted photoelectrons is

Medium View solution >

### Electrons with energy 5 eV are incident on a cathode C in a photoelectric cell. The maximum kinetic energy of the emitted photoelectrons is 2 eV. When electron of energy 6 eV are incident on C, no photoelectrons will reach the anode A if the stopping potential of A relative to C is

Direction : The question has Statement 1 and Statement 2. Of the four choices given after the statements, choose the one that describes the two statements.

Hard View solution >

Statement 1 : A metallic surface is irradiated by a monochromatic light of frequency v>v

0 ​

(the threshold frequency). The maximum kinetic energy and the stopping potential are K

max ​ and V 0 ​

respectively. If the frequency incident on the surface is doubled, both the K

max ​ and V 0 ​ are also doubled.

Statement 2 : The maximum kinetic energy and the stopping potential of photoelectrons emitted from a surface are linearly dependent on the frequency of incident light.

When a certain surface is illuminated with light of frequency v, the stopping potential for photoelectric current is V

Medium View solution > 0 ​

When the same surface is illuminated by light of frequency

2 v ​

the stopping potential is V

0 ​

/4. The threshold frequency for photoelectric emission is:

Hard View solution >

### The curve between the frequency ν and stopping potential V in a photoelectric cell will be

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## [Solved] The stopping potential of photoelectrons depends on

The correct answer is option 2) i.e. ​The frequency of the incident light CONCEPT: Photoelectric effect: The photoelectric effect is a phenomeno

Home Physics Dual Nature: Photon and Matter Waves Photoelectric Effect and Wave Theory of Light

## The stopping potential of photoelectrons depends on

The intensity of incident light

The frequency of the incident light

The charge of electrons

None of the above

Option 2 :

The frequency of the incident light

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## Detailed Solution

The correct answer is option 2) i.e. ​The frequency of the incident light

CONCEPT:

Photoelectric effect: The photoelectric effect is a phenomenon where electrons are ejected from a metal surface when the light of sufficient frequency is incident on it. These ejected electrons are called photoelectrons.

When a photon falls on the metal surface, the photon’s energy is transferred to the electron.

Some part of the energy gets utilized in removing the electron from the metal surface, and the remaining goes into giving kinetic energy for the ejected electron.

Therefore, the total energy of photon = energy utilized to eject an electron + maximum kinetic energy of the electron.

The energy of a photon is given by the equation:

ν E=hν .

Where ν is the frequency of incident light and h is the Planck's constant.​

Stopping potential: The kinetic energy of the ejected electron is the product of the charge of the electron and the voltage difference. The amount of potential required to generate this kinetic energy so as to stop the electrons from being emitted is called the stopping potential.EXPLANATION:

Stopping potential is a measure of the kinetic energy of the electron, which comes from the energy of incident light.

The energy of incident light is directly proportional to its frequency.

Hence, the stopping potential of photoelectrons depends on the frequency of incident light.

Confusion Points

The intensity of light refers to the number of photons per unit area.

The greater the intensity of light more will be the number of photons, and as a result, more will be the number of ejected photo-electrons. So, intensity gives a measure of the number of emitted electrons and not the energy of emitted electrons.

The charge of an electron is fixed and will not vary.

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## More Photoelectric Effect and Wave Theory of Light Questions

Q1. The two light beams having intensities I and 9I interfere to produce a fringe pattern on a screen. The phase difference between the beams is π/2 at point P and π at point Q. Then the difference between the resultant intensities at P and Q will be :Q2. When a piece of metal is illuminated by a monochromatic light of frequency ν, then stopping potential is Vs. When same surface is illuminated by light of frequency 2ν, then stopping potential becomes 3Vs. The value of threshold frequency for photoelectric emission will beQ3. The work function of a metal surface is 3.5 eV. If this surface is illuminated by monochromatic light of frequency 6.4 × 1014 Hz, then find the maximum kinetic energy of the photoelectrons.Q4. The work function of a metal surface is 3.315 eV. Find the threshold frequency of the metal surface.Q5. The number of photoelectrons emitted per unit time per unit area from the metal surface depend on the:Q6. If the work function of metal A is more than metal B, then the threshold frequency of metal A will be:Q7. The graph between the maximum kinetic energy of the emitted photoelectrons and the frequency of the incident light is drawn as:

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Mohammed 13 day ago

Guys, does anyone know the answer?