Photoelectric Effect
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PHXII11:DUAL NATURE OF RADIATION AND MATTER

357756 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

1 Twice the original value
2 Four times the original value
3 One fourth of the original value
4 Unchanged
MHTCET - 2019
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357757 The photoelectric threshold wavelength for silver is \(\lambda_{0}\). The energy of the electron ejected from the surface of silver by an incident wavelength \(\lambda\left(\lambda < \lambda_{0}\right)\) will be

1 \(hc\left( {{\lambda _0} - \lambda } \right)\)
2 \(\frac{{hc}}{{{\lambda _0} - \lambda }}\)
3 \(\frac{h}{c}\left( {\frac{{{\lambda _0} - \lambda }}{{\lambda {\lambda _0}}}} \right)\)
4 \(hc\left( {\frac{{{\lambda _0} - \lambda }}{{\lambda {\lambda _0}}}} \right)\)
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357758 The light of two different frequencies whose photons have energis \(3.8\,eV\) and \(1.4\,eV\) respectively, illuminate a metallic surface whose work function is \(0.6\,eV\). The ratio of maximum speeds of emitted electrons (for these two frequencies) respectively will be:

1 \(1: 1\)
2 \(2: 1\)
3 \(4: 1\)
4 \(1: 4\)
JEE - 2022
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357759 Light of two different frequencies whose photons have energies \(1\,eV\) and \(2.5\,eV\) respectively, successively illuminates a metal of work function \(0.5\,eV\). If the maximum kinetic energies of emitted electron is \({K_{1}}\) and \({K_{2}}\) respectively. The ratio \({\dfrac{K_{2}}{K_{1}}}\) is

1 \(\frac{3}{2}\)
2 \(\frac{1}{4}\)
3 \(\frac{1}{6}\)
4 \(\frac{4}{3}\)
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PHXII11:DUAL NATURE OF RADIATION AND MATTER

357756 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

1 Twice the original value
2 Four times the original value
3 One fourth of the original value
4 Unchanged
MHTCET - 2019
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357757 The photoelectric threshold wavelength for silver is \(\lambda_{0}\). The energy of the electron ejected from the surface of silver by an incident wavelength \(\lambda\left(\lambda < \lambda_{0}\right)\) will be

1 \(hc\left( {{\lambda _0} - \lambda } \right)\)
2 \(\frac{{hc}}{{{\lambda _0} - \lambda }}\)
3 \(\frac{h}{c}\left( {\frac{{{\lambda _0} - \lambda }}{{\lambda {\lambda _0}}}} \right)\)
4 \(hc\left( {\frac{{{\lambda _0} - \lambda }}{{\lambda {\lambda _0}}}} \right)\)
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357758 The light of two different frequencies whose photons have energis \(3.8\,eV\) and \(1.4\,eV\) respectively, illuminate a metallic surface whose work function is \(0.6\,eV\). The ratio of maximum speeds of emitted electrons (for these two frequencies) respectively will be:

1 \(1: 1\)
2 \(2: 1\)
3 \(4: 1\)
4 \(1: 4\)
JEE - 2022
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357759 Light of two different frequencies whose photons have energies \(1\,eV\) and \(2.5\,eV\) respectively, successively illuminates a metal of work function \(0.5\,eV\). If the maximum kinetic energies of emitted electron is \({K_{1}}\) and \({K_{2}}\) respectively. The ratio \({\dfrac{K_{2}}{K_{1}}}\) is

1 \(\frac{3}{2}\)
2 \(\frac{1}{4}\)
3 \(\frac{1}{6}\)
4 \(\frac{4}{3}\)
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PHXII11:DUAL NATURE OF RADIATION AND MATTER

357756 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

1 Twice the original value
2 Four times the original value
3 One fourth of the original value
4 Unchanged
MHTCET - 2019
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357757 The photoelectric threshold wavelength for silver is \(\lambda_{0}\). The energy of the electron ejected from the surface of silver by an incident wavelength \(\lambda\left(\lambda < \lambda_{0}\right)\) will be

1 \(hc\left( {{\lambda _0} - \lambda } \right)\)
2 \(\frac{{hc}}{{{\lambda _0} - \lambda }}\)
3 \(\frac{h}{c}\left( {\frac{{{\lambda _0} - \lambda }}{{\lambda {\lambda _0}}}} \right)\)
4 \(hc\left( {\frac{{{\lambda _0} - \lambda }}{{\lambda {\lambda _0}}}} \right)\)
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357758 The light of two different frequencies whose photons have energis \(3.8\,eV\) and \(1.4\,eV\) respectively, illuminate a metallic surface whose work function is \(0.6\,eV\). The ratio of maximum speeds of emitted electrons (for these two frequencies) respectively will be:

1 \(1: 1\)
2 \(2: 1\)
3 \(4: 1\)
4 \(1: 4\)
JEE - 2022
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357759 Light of two different frequencies whose photons have energies \(1\,eV\) and \(2.5\,eV\) respectively, successively illuminates a metal of work function \(0.5\,eV\). If the maximum kinetic energies of emitted electron is \({K_{1}}\) and \({K_{2}}\) respectively. The ratio \({\dfrac{K_{2}}{K_{1}}}\) is

1 \(\frac{3}{2}\)
2 \(\frac{1}{4}\)
3 \(\frac{1}{6}\)
4 \(\frac{4}{3}\)
For More Updates join with Us
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357756 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

1 Twice the original value
2 Four times the original value
3 One fourth of the original value
4 Unchanged
MHTCET - 2019
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357757 The photoelectric threshold wavelength for silver is \(\lambda_{0}\). The energy of the electron ejected from the surface of silver by an incident wavelength \(\lambda\left(\lambda < \lambda_{0}\right)\) will be

1 \(hc\left( {{\lambda _0} - \lambda } \right)\)
2 \(\frac{{hc}}{{{\lambda _0} - \lambda }}\)
3 \(\frac{h}{c}\left( {\frac{{{\lambda _0} - \lambda }}{{\lambda {\lambda _0}}}} \right)\)
4 \(hc\left( {\frac{{{\lambda _0} - \lambda }}{{\lambda {\lambda _0}}}} \right)\)
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357758 The light of two different frequencies whose photons have energis \(3.8\,eV\) and \(1.4\,eV\) respectively, illuminate a metallic surface whose work function is \(0.6\,eV\). The ratio of maximum speeds of emitted electrons (for these two frequencies) respectively will be:

1 \(1: 1\)
2 \(2: 1\)
3 \(4: 1\)
4 \(1: 4\)
JEE - 2022
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357759 Light of two different frequencies whose photons have energies \(1\,eV\) and \(2.5\,eV\) respectively, successively illuminates a metal of work function \(0.5\,eV\). If the maximum kinetic energies of emitted electron is \({K_{1}}\) and \({K_{2}}\) respectively. The ratio \({\dfrac{K_{2}}{K_{1}}}\) is

1 \(\frac{3}{2}\)
2 \(\frac{1}{4}\)
3 \(\frac{1}{6}\)
4 \(\frac{4}{3}\)