Home › UP Board Class 12 › Physics › Dual Nature of Radiation and Matter › Photoelectric emission begins after a time lag t…
Photoelectric emission begins after a time lag that is:
AAround one day
BClose to a week
CEffectively none
DAbout one hour
Answer & Solution
Correct answer: C. Effectively none
1. Wave theory predicted a long wait for weak light.
2. Experiment found emission starting at once.
3. The process is instantaneous.
4. So the answer is effectively none.
_Source: NCERT Class 12 Physics, Ch 11 'Dual Nature of Radiation and Matter'_
Related questions
The de Broglie hypothesis of matter waves supports the stationary orbits of:The wave nature of electrons was confirmed by Davisson and:De Broglie was awarded the Nobel Prize in Physics in:De Broglie was a physicist of which nationality?Who proposed the idea of matter waves in 1924?In a photon-particle collision, what may not be conserved?Photon energy is independent of the radiation's:Increasing the intensity of light of a given wavelength increases the: