MyQuestionIcon

4

You visited us 4 times! Enjoying our articles? Unlock Full Access!

Stopping Potential

If the work f...

Question

If the work function of a metal is $5 e V$ and photons of energy $20 e V$ are incident on the surface, then the stopping potential of the surface is

A

5 V

No worries! We‘ve got your back. Try BYJU‘S free classes today!

B

10 V

No worries! We‘ve got your back. Try BYJU‘S free classes today!

C

15 V

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

D

20 V

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is C $15 V$
stopping potential $=$ (incident energy - work function)/e
$= (20 e v - 5 e v) / e$
$= 15 e V / e$
$= 15 V$

Suggest Corrections

thumbs-up

0

Similar questions

6 e V

is incident on a metal surface and the emitted electron is stopped by a retarding potential of

- 5 e V

. What is the work function of the metal?

Q. Photons of energy 6 eV are incident on a potassium surface whose work function is 2.1 eV. The corresponding stopping potential required is :

Q. A photon of energy

4 e V

is incident on a metal surface whose work function is

2 e V

. The minimum reverse potential to be applied for stopping the emission of electrons is-

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

Q. The threshold frequency for a metallic surface corresponds to an energy of

6.2 e V

and the stopping potential for a radiation incident on this surface is

5 V

. The incident radiation lies in:

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Stopping Potential

PHYSICS

Watch in App

explore_more_icon

Explore more

Stopping Potential

Standard XII Physics

Join BYJU'S Learning Program

CrossIcon