(D) The maximum kinetic energy of photoelectrons is given by Einstein's photoelectric equation: $KE_{\text{max}} = h(v - v_0)$ ... $(i)$Where $h$ is P

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(D) The maximum kinetic energy of photoelectrons is given by Einstein's photoelectric equation: $KE_{\text{max}} = h(v - v_0)$ ... $(i)$Where $h$ is Planck's constant,$v$ is the frequency of incident radiation,and $v_0$ is the threshold frequency.From equation $(i)$,it is clear that the maximum kinetic energy $(KE_{\text{max}})$ depends only on the frequency of the incident light and the work function of the metal.It is independent of the intensity of the incident radiation.Therefore,if the intensity is reduced to one-fourth of its original value,the maximum kinetic energy of the emitted photoelectrons remains unchanged.

Class 12 Physics Dual Nature of Radiation and matter Einstein's Photoelectric Equation and Energy Quantum of Radiation

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$A$ metal surface is illuminated by light of given intensity and frequency to cause photoemission. If the intensity of illumination is reduced to one fourth of its original value,then the maximum $KE$ of the emitted photoelectrons would be

MHT CET 2019 All MHT CET

A
Twice the original value
B
Four times the original value
C
One fourth of the original value
D
Unchanged

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Dual Nature of Radiation and matter

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Einstein's Photoelectric Equation and Energy Quantum of Radiation

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$A$ metal surface is illuminated by light of given intensity and frequency to cause photoemission. If the intensity of illumination is reduced to one fourth of its original value,then the maximum $KE$ of the emitted photoelectrons would be

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When monochromatic light falls on a photo-sensitive metal,an electron is emitted with maximum velocity $1.6 \times 10^6 \ m/s$. Find the stopping potential.[charge of electron $= 1.6 \times 10^{-19} \ C$,mass of electron $= 9 \times 10^{-31} \ kg$] (in $V$)

Let $K_{1}$ and $K_{2}$ be the maximum kinetic energies of photo-electrons emitted when two monochromatic beams of wavelength $\lambda_{1}$ and $\lambda_{2}$,respectively,are incident on a metallic surface. If $\lambda_{1} = 3 \lambda_{2}$,then:

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When monochromatic light falls on a photo-sensitive metal,an electron is emitted with maximum velocity $1.6 \times 10^6 \ m/s$. Find the stopping potential.
[charge of electron $= 1.6 \times 10^{-19} \ C$,mass of electron $= 9 \times 10^{-31} \ kg$] (in $V$)