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Sahay Sir > Question Answers > MTG NEET Physics > Part 2 > Chapter 11 - Dual Nature of Radiation and Matter > A and B are two metals with threshold frequencies 1.8×10^14Hz and 2.2×10^4Hz. Two identical photons of energy 0.825 eV each are incident on them. Then photoelectrons are emitted by (Take h = 6.6×10^−34J−s)

A and B are two metals with threshold frequencies 1.8×10^14Hz and 2.2×10^4Hz. Two identical photons of energy 0.825 eV each are incident on them. Then photoelectrons are emitted by (Take h = 6.6×10^−34J−s)

If in a photoelectric cell the wavelength of incident light is changed from 4000 Å to 3000 Å then change in stopping potential will be