Home
Class 12
PHYSICS
At the threshold frequency, the velocity...

At the threshold frequency, the velocity of the electrons is `:`

A

zero

B

maximum

C

minimum

D

infinite

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Similar Questions

Explore conceptually related problems

Below the threshold frequency, if the intensity of radiation is increased, the emission of photoelectrons "_________" .

It is found experimentally that 13.6 eV energy is requied to separate a hydrogen atom into a proton and an electron . Compute the orbital radius and the velocity of the electron in a hydrogen atom .

Light of frequency 7.21xx10^(14)Hz is incident on a metal surface. Electrons with a maximum speed of 6.0 xx 10^(5) m/s are ejected from the surface. What is the threshold frequency for photoemission of electrons?

Light frequency v falls on material of threshold frequency v_(0) , the maximum K.E. of emitted electron is proportional to

In Exercise. 11 obtain the frequency of revolution of the electron in tis circular orbit. Does the answer depend on the speed of the electron ? Explain .

Obtain an expression for the frequency of radiation emitted when a hydrogen atom de-excites from level n to level (n-1). For large n, show that this frequency equals the classical frequency of revolution of the electron in the orbit.

According to the classical electromagnetic theory , calculate the initial frequency of the light emitted by the electron revoling around a proton in hydrogen atom .

At the threshold frequency, stopping potential is "__________" .

In the Davisson and Germer experiment, the velocity of electrons emitted from the electron gun can be increased by: