At stopping potential, if the wavelength of the incident light is kept fixed at $4000 A o$ , but the intensity of light increases two times, Find out the change in magnitude of stopping potential.

Question

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Answer 1

By increasing the intensity of incident radiation, only number of photons increases which results in the increase in number of photo electrons emitted but maximum kinetic of photo electrons remains the same and thus stopping potential also remains the same.
So, change in magnitude of stopping potential is zero.

Answer 2

By increasing the intensity of incident radiation, only number of photons increases which results in the increase in number of photo electrons emitted but maximum kinetic of photo electrons remains the same and thus stopping potential also remains the same.
So, change in magnitude of stopping potential is zero.

At stopping potential, if the wavelength of the incident light is kept fixed at $4000 A o$ , but the intensity of light increases two times, Find out the change in magnitude of stopping potential.

A radiation of wave length 2500 $A^{0}$ is incident on a metal plate whose work function is 3.5 eV. Then the potential required to stop the fastest photo electrons emitted by the surface is :
( $h = 6.63 \times 1 0^{- 34}$ Js and $c = 3 \times 1 0^{8}$ m/s)

The stopping potential for the photoelectrons emitted from a metal surface of work function 1.7 eV is 10.4 V. Find the wavelength of the radiation in $A 0$

Revise with Concepts

Photocell

Probability Interpretation of Matter Waves

At stopping potential, if the wavelength of the incident light is kept fixed at 4000Ao, but the intensity of light increases two times, Find out the change in magnitude of stopping potential.

A radiation of wave length 2500 A0 is incident on a metal plate whose work function is 3.5 eV. Then the potential required to stop the fastest photo electrons emitted by the surface is : (h=6.63×10−34Js and c=3×108 m/s)

The stopping potential for the photoelectrons emitted from a metal surface of work function 1.7 eV is 10.4 V. Find the wavelength of the radiation in A0

Revise with Concepts

Photocell

Probability Interpretation of Matter Waves

At stopping potential, if the wavelength of the incident light is kept fixed at $4000 A o$ , but the intensity of light increases two times, Find out the change in magnitude of stopping potential.

A radiation of wave length 2500 $A^{0}$ is incident on a metal plate whose work function is 3.5 eV. Then the potential required to stop the fastest photo electrons emitted by the surface is :
( $h = 6.63 \times 1 0^{- 34}$ Js and $c = 3 \times 1 0^{8}$ m/s)

The stopping potential for the photoelectrons emitted from a metal surface of work function 1.7 eV is 10.4 V. Find the wavelength of the radiation in $A 0$