Home
Class 12
PHYSICS
A photon energy 3.4 eV is incident on a ...

A photon energy `3.4 eV` is incident on a metal having work function `2 eV`. The maximum `K.E.` of photoelectrons is equal to

A

`1.4 eV`

B

`1.7 eV`

C

`5.4 eV`

D

`6.8 eV`

Text Solution

Verified by Experts

The correct Answer is:
A
`K_(max) = (E - W_(0)) = (3.4 - 2) eV = 1.4 eV`
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • DUAL NATURE OF RADIATION AND MATTER

    A2Z|Exercise X-Rays|45 Videos

  • DUAL NATURE OF RADIATION AND MATTER

    A2Z|Exercise Problems Based On Mixed Concepts|42 Videos

  • DUAL NATURE OF RADIATION AND MATTER

    A2Z|Exercise Photo Momentum Energy|30 Videos

  • CURRENT ELECTRICITY

    A2Z|Exercise Section D - Chapter End Test|29 Videos

  • ELECTRIC CHARGE, FIELD & FLUX

    A2Z|Exercise Section D - Chapter End Test|29 Videos

Similar Questions

Explore conceptually related problems

Photons of energy 4eV are incident on a metal sphere of work function 2eV .If the radius of the sphere is 5mm ,the number of electrons emitted before photo-electric emission stops is N times10^(6) .Then N =

A photon of energy 2.16eV is incident on the surface of a metal of photoelectric work function 1.25eV. If the maximum velocity of a photoelectron emitted is 0.566 xx 10^(6) ms^(-1) , calculate the mass of the electron.

Knowledge Check

  • Light of waelength 4000Å is incident on a metal plate with work function 2eV. The max. K.E. of the photoelectrons is

    A
    2 eV
    B
    1.5eV
    C
    1.1 eV
    D
    1.47 eV

  • A photon of energy 4 eV is incident on a metal surface whose work function is 2 eV . The minimum reverse potential to be applied for stopping the emission of electrons is

    A
    `6 V`
    B
    `4 V`
    C
    `2 V`
    D
    `8 V`

  • A photon of energy 7 eV is incident on a metal surface having the work function of 3.75 eV. What is the stopping potential ?

    A
    2 V
    B
    3 V
    C
    3.25 V
    D
    4.5 V

    • Similar Questions

    Explore conceptually related problems

    Photons of energy 3.55 eV each are incident on a metal surface whose work function is 1.9 eV. What is the maximum K.E with which an electron is ejected form tis surface ?

    Monochromatic photons of energy 3.3 eV are incident on a photo sensitive surface of work function 2.4 eV. , maximum velocity of photoelectron is

    Light of wavelength 3000Å is incident on a metal surface whose work function is 1 eV. The maximum velocity of emitted photoelectron will be

    The radiations of 1 eV and 2.5 eV are incident on a metal having a work function of 0.5 eV . The ratio of their maximum velocities is

    A light beam consists of two types of photons. In one type, each photon has the energy 2 eV and in another type, each photon has energy 3 eV. The light beam is incident on a photoelectric material of work function 1 eV. The maximum kinetic enregy of emitted photoelectron is

    Home
    Profile