Home
Class 12
PHYSICS
Photocurrent recorded in the micro ammet...

Photocurrent recorded in the micro ammeter in an experimental set-up of photoelectric effect vanishes when the retarding potential is more than 0.8 V if the wavelength of incident radiation is `4950 overset (@)(A)`. If the source of incident radiation is changed, the stopping potential turns out to be 1.2 V. Find the work function of the cathode material and the wavelength of the second source .

Promotional Banner

Similar Questions

Explore conceptually related problems

When a surface is irradiated with light of wavelength 4950 overset(@)(A) ,a photocurrent appears which vanishes if a retarding potential greater than 0.6 V is applied across the phototube.When different source of light is used,it is found that the critical retarding potential is changed to 1.1 V.Find the work function of the emitting surface and the wavelength of the second source

In a photoelectric experiment for 4000 Å incident radiation, the potential difference to stop the ejection is 2 V . If the incident light is changed to 3000 Å , then the potential required to stop the ejection of electrons will be

Light of wavelength 2 xx 10^-7 m incident on the cathode of a photocell. The current in the photocell is reduced to zero by a stopping potential of 2V. Find the threshold avelength of a cathode.

The radiation of wavelength 332 nm is incident on a metal of work function 1.70 eV. The value of the stopping potential will be

The work function of caesium is 2.14 eV. Find the wavelength of the incident light if photocurrent is brought to zero by stopping potential of 0.60 V.

Photon having wavelength lambda = 3.5xx10^(-7)m and lambda = 5.4xx10^(-7)m incident on a metal surface successively, let in both cases the ration of their stopping potential is 2 : 1, find work function :

The photoelectric work function of the emitter of photoelectric cell is 2 eV.Whenemitter is irradiated by monochromatic light of certain wavelength, the photoelectric current can just be reduced to zero by applying stopping potential of 1.5 V. Find the wavelength of incident light.