Home
Class 12
PHYSICS
If e/m of electron is 1.76xx10^(11)Ckg^(...

If e/m of electron is `1.76xx10^(11)Ckg^(-11)` and the stopping potential is 0.71 V, then the maximum velocity of the photoelectron is

A

a. 150 km `s^(-1)`

B

b. 200 km `s^(-1)`

C

c. 500 km `s^(-1)`

D

d. 250 km `s^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • DUAL NATURE OF RADIATION AND MATTER

    NEW JOYTHI PUBLICATION|Exercise PREVIOUS YEAR QUESTIONS|4 Videos

  • CURRENT ELECTRICITY

    NEW JOYTHI PUBLICATION|Exercise COMPETITIVE EXAM CORNER|37 Videos

  • ELECTRIC CHARGES AND FIELDS

    NEW JOYTHI PUBLICATION|Exercise Competitive Exam Corner|20 Videos

Similar Questions

Explore conceptually related problems

The electric field associated with a light wave is given by E= E_0 sin [(1.57xx 10^7 m^(-1)(x-ct)]. Find the stopping potential when this light is used in an experiment on photoelectric effect with a metal having work - function 1.9 eV.

If the kinetic energy of photo electron is found to be 16J, whose mass is m_(e ) , the maximum velocity of that electron will be "_________" .

The work function of caesium metal is 2.14 eV. When light of frequency 6xx10^(14)Hz is incident on the metal surface, photoemission of electrons occurs. What is the a. maximum kinetic energy of the emitted electrons, b. stopping potential, and c. maximum speed of the emitted photoelectrons ?

A proton beam enters a magnetic field of 10^(-4)Wb m^(-2) normally. If the specific charge of the proton is 10^11 C kg^(-1) and its velocity is 10^9 ms^-1 ,then the radius of the circle described will be:

If mass of an electron is 9.11xx10^(-31) kg then how many electrons would weight in 1 mg?

Light described at a place by the equation E=(100 V/m) [sin(5xx10^15 s ^(-1) )t +sin (8xx 10^15 s^(-1) )t] falls on a metal surface having work function 2.0 eV. Calculate the maximum kinetic energy of the photoelectrons.

For photoelectric emission from certain metal the cut -off frequency is v . If radiation of frequency 2v impinges on the metal plate, the maximum possible velocity of the emitted electron will be(m is the electron mass).

Calculate the maximum kinetic energy and maximum velocity of the photoelectrons emitted when the stopping potential is 81V for the photoelectric emission experiment.