Advertisements
Advertisements
Question
Two radiations with photon energies 0.9 eV and 3.3 eV respectively are falling on a metallic surface successively. If the work function of the metal is 0.6 eV, then the ratio of maximum speeds of emitted electrons in the two cases will be
Options
1 : 4
1 : 3
1 : 1
1 : 9
Advertisements
Solution
1 : 3
APPEARS IN
RELATED QUESTIONS
The work functions for metals A, B and C are 1.92 eV, 2.0 eV and 5.0 eV respectively. The metal/metals which will emit photoelectrons for a radiation of wavelength 4100Å is/are
How does photocurrent vary with the intensity of the incident light?
Give the definition of intensity of light according to quantum concept and its unit.
Define stopping potential.
Briefly discuss the observations of Hertz, Hallwachs and Lenard.
Explain the effect of potential difference on photoelectric current.
List out the laws of photoelectric effect.
Explain the quantum concept of light.
List out the characteristics of photons.
Calculate the energies of the photons associated with the following radiation:
- violet light of 413 nm
- X-rays of 0.1 nm
- radio waves of 10 m
