Einstein s Photo Electric Equation and Energy Quantity Of Radiation (KE, Vmax, Work Function)
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Dual nature of radiation and Matter

142182 The work function of a metal is $h v_{0}$. Light of frequency $v$ falls on this metal. The photoelectric effect will take place only if

1 $v>v_{0}$
2 $v>2 v_{0}$
3 $v \lt v_{0}$
4 $v \lt \frac{v_{0}}{2}$
TS EAMCET 04.08.2021
Dual nature of radiation and Matter

142183 A beam of photons with an energy of $10.5 \mathrm{eV}$ strike a metal plate. The pho toelectrons are emitted with maximum velocity of $1.6 \times 10^{6} \mathrm{~m} / \mathrm{s}$. The work-function of the metal is
(assume, mass of electron $9.1 \times 10^{-31}$ and charge of electron $=1.6 \times 10^{-19} \mathrm{C}$ )

1 $3.0 \mathrm{eV}$
2 $3.1 \mathrm{eV}$
3 $3.3 \mathrm{eV}$
4 $3.5 \mathrm{eV}$
Shift-1
Dual nature of radiation and Matter

142184 When the energy of incident radiation is increased by $20 \%$, the kinetic energy of the photolectrons emitted from a metal surface increased from $0.5 \mathrm{eV}$ to $0.8 \mathrm{eV}$. The work function of the metal is

1 $0.65 \mathrm{eV}$
2 $1.0 \mathrm{eV}$
3 $1.3 \mathrm{eV}$
4 $1.5 \mathrm{eV}$
Shift-1
Dual nature of radiation and Matter

142185 The de-Broglie wavelength of the electron in the first Bohr orbit of the hydrogen atom is

1 equal to the diameter of the first orbit
2 equal to the circumference of the first orbit
3 equal to the half circumference of the first orbit
4 independent of the size of the first orbit
Shift-2
Dual nature of radiation and Matter

142186 A light of wavelength $310 \mathrm{~nm}$ is used in a photoelectric experiment. The metal electrode of work function of $2.5 \mathrm{eV}$ is used in the experiment. The stopping potential for the photoelectrons will be (assume, hc $=1240 \mathrm{eV}-\mathrm{nm}$ )

1 $1.0 \mathrm{~V}$
2 $1.5 \mathrm{~V}$
3 $2.0 \mathrm{~V}$
4 $2.5 \mathrm{~V}$
Shift-2
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Dual nature of radiation and Matter

142182 The work function of a metal is $h v_{0}$. Light of frequency $v$ falls on this metal. The photoelectric effect will take place only if

1 $v>v_{0}$
2 $v>2 v_{0}$
3 $v \lt v_{0}$
4 $v \lt \frac{v_{0}}{2}$
TS EAMCET 04.08.2021
Dual nature of radiation and Matter

142183 A beam of photons with an energy of $10.5 \mathrm{eV}$ strike a metal plate. The pho toelectrons are emitted with maximum velocity of $1.6 \times 10^{6} \mathrm{~m} / \mathrm{s}$. The work-function of the metal is
(assume, mass of electron $9.1 \times 10^{-31}$ and charge of electron $=1.6 \times 10^{-19} \mathrm{C}$ )

1 $3.0 \mathrm{eV}$
2 $3.1 \mathrm{eV}$
3 $3.3 \mathrm{eV}$
4 $3.5 \mathrm{eV}$
Shift-1
Dual nature of radiation and Matter

142184 When the energy of incident radiation is increased by $20 \%$, the kinetic energy of the photolectrons emitted from a metal surface increased from $0.5 \mathrm{eV}$ to $0.8 \mathrm{eV}$. The work function of the metal is

1 $0.65 \mathrm{eV}$
2 $1.0 \mathrm{eV}$
3 $1.3 \mathrm{eV}$
4 $1.5 \mathrm{eV}$
Shift-1
Dual nature of radiation and Matter

142185 The de-Broglie wavelength of the electron in the first Bohr orbit of the hydrogen atom is

1 equal to the diameter of the first orbit
2 equal to the circumference of the first orbit
3 equal to the half circumference of the first orbit
4 independent of the size of the first orbit
Shift-2
Dual nature of radiation and Matter

142186 A light of wavelength $310 \mathrm{~nm}$ is used in a photoelectric experiment. The metal electrode of work function of $2.5 \mathrm{eV}$ is used in the experiment. The stopping potential for the photoelectrons will be (assume, hc $=1240 \mathrm{eV}-\mathrm{nm}$ )

1 $1.0 \mathrm{~V}$
2 $1.5 \mathrm{~V}$
3 $2.0 \mathrm{~V}$
4 $2.5 \mathrm{~V}$
Shift-2
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Dual nature of radiation and Matter

142182 The work function of a metal is $h v_{0}$. Light of frequency $v$ falls on this metal. The photoelectric effect will take place only if

1 $v>v_{0}$
2 $v>2 v_{0}$
3 $v \lt v_{0}$
4 $v \lt \frac{v_{0}}{2}$
TS EAMCET 04.08.2021
Dual nature of radiation and Matter

142183 A beam of photons with an energy of $10.5 \mathrm{eV}$ strike a metal plate. The pho toelectrons are emitted with maximum velocity of $1.6 \times 10^{6} \mathrm{~m} / \mathrm{s}$. The work-function of the metal is
(assume, mass of electron $9.1 \times 10^{-31}$ and charge of electron $=1.6 \times 10^{-19} \mathrm{C}$ )

1 $3.0 \mathrm{eV}$
2 $3.1 \mathrm{eV}$
3 $3.3 \mathrm{eV}$
4 $3.5 \mathrm{eV}$
Shift-1
Dual nature of radiation and Matter

142184 When the energy of incident radiation is increased by $20 \%$, the kinetic energy of the photolectrons emitted from a metal surface increased from $0.5 \mathrm{eV}$ to $0.8 \mathrm{eV}$. The work function of the metal is

1 $0.65 \mathrm{eV}$
2 $1.0 \mathrm{eV}$
3 $1.3 \mathrm{eV}$
4 $1.5 \mathrm{eV}$
Shift-1
Dual nature of radiation and Matter

142185 The de-Broglie wavelength of the electron in the first Bohr orbit of the hydrogen atom is

1 equal to the diameter of the first orbit
2 equal to the circumference of the first orbit
3 equal to the half circumference of the first orbit
4 independent of the size of the first orbit
Shift-2
Dual nature of radiation and Matter

142186 A light of wavelength $310 \mathrm{~nm}$ is used in a photoelectric experiment. The metal electrode of work function of $2.5 \mathrm{eV}$ is used in the experiment. The stopping potential for the photoelectrons will be (assume, hc $=1240 \mathrm{eV}-\mathrm{nm}$ )

1 $1.0 \mathrm{~V}$
2 $1.5 \mathrm{~V}$
3 $2.0 \mathrm{~V}$
4 $2.5 \mathrm{~V}$
Shift-2
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Dual nature of radiation and Matter

142182 The work function of a metal is $h v_{0}$. Light of frequency $v$ falls on this metal. The photoelectric effect will take place only if

1 $v>v_{0}$
2 $v>2 v_{0}$
3 $v \lt v_{0}$
4 $v \lt \frac{v_{0}}{2}$
TS EAMCET 04.08.2021
Dual nature of radiation and Matter

142183 A beam of photons with an energy of $10.5 \mathrm{eV}$ strike a metal plate. The pho toelectrons are emitted with maximum velocity of $1.6 \times 10^{6} \mathrm{~m} / \mathrm{s}$. The work-function of the metal is
(assume, mass of electron $9.1 \times 10^{-31}$ and charge of electron $=1.6 \times 10^{-19} \mathrm{C}$ )

1 $3.0 \mathrm{eV}$
2 $3.1 \mathrm{eV}$
3 $3.3 \mathrm{eV}$
4 $3.5 \mathrm{eV}$
Shift-1
Dual nature of radiation and Matter

142184 When the energy of incident radiation is increased by $20 \%$, the kinetic energy of the photolectrons emitted from a metal surface increased from $0.5 \mathrm{eV}$ to $0.8 \mathrm{eV}$. The work function of the metal is

1 $0.65 \mathrm{eV}$
2 $1.0 \mathrm{eV}$
3 $1.3 \mathrm{eV}$
4 $1.5 \mathrm{eV}$
Shift-1
Dual nature of radiation and Matter

142185 The de-Broglie wavelength of the electron in the first Bohr orbit of the hydrogen atom is

1 equal to the diameter of the first orbit
2 equal to the circumference of the first orbit
3 equal to the half circumference of the first orbit
4 independent of the size of the first orbit
Shift-2
Dual nature of radiation and Matter

142186 A light of wavelength $310 \mathrm{~nm}$ is used in a photoelectric experiment. The metal electrode of work function of $2.5 \mathrm{eV}$ is used in the experiment. The stopping potential for the photoelectrons will be (assume, hc $=1240 \mathrm{eV}-\mathrm{nm}$ )

1 $1.0 \mathrm{~V}$
2 $1.5 \mathrm{~V}$
3 $2.0 \mathrm{~V}$
4 $2.5 \mathrm{~V}$
Shift-2
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Dual nature of radiation and Matter

142182 The work function of a metal is $h v_{0}$. Light of frequency $v$ falls on this metal. The photoelectric effect will take place only if

1 $v>v_{0}$
2 $v>2 v_{0}$
3 $v \lt v_{0}$
4 $v \lt \frac{v_{0}}{2}$
TS EAMCET 04.08.2021
Dual nature of radiation and Matter

142183 A beam of photons with an energy of $10.5 \mathrm{eV}$ strike a metal plate. The pho toelectrons are emitted with maximum velocity of $1.6 \times 10^{6} \mathrm{~m} / \mathrm{s}$. The work-function of the metal is
(assume, mass of electron $9.1 \times 10^{-31}$ and charge of electron $=1.6 \times 10^{-19} \mathrm{C}$ )

1 $3.0 \mathrm{eV}$
2 $3.1 \mathrm{eV}$
3 $3.3 \mathrm{eV}$
4 $3.5 \mathrm{eV}$
Shift-1
Dual nature of radiation and Matter

142184 When the energy of incident radiation is increased by $20 \%$, the kinetic energy of the photolectrons emitted from a metal surface increased from $0.5 \mathrm{eV}$ to $0.8 \mathrm{eV}$. The work function of the metal is

1 $0.65 \mathrm{eV}$
2 $1.0 \mathrm{eV}$
3 $1.3 \mathrm{eV}$
4 $1.5 \mathrm{eV}$
Shift-1
Dual nature of radiation and Matter

142185 The de-Broglie wavelength of the electron in the first Bohr orbit of the hydrogen atom is

1 equal to the diameter of the first orbit
2 equal to the circumference of the first orbit
3 equal to the half circumference of the first orbit
4 independent of the size of the first orbit
Shift-2
Dual nature of radiation and Matter

142186 A light of wavelength $310 \mathrm{~nm}$ is used in a photoelectric experiment. The metal electrode of work function of $2.5 \mathrm{eV}$ is used in the experiment. The stopping potential for the photoelectrons will be (assume, hc $=1240 \mathrm{eV}-\mathrm{nm}$ )

1 $1.0 \mathrm{~V}$
2 $1.5 \mathrm{~V}$
3 $2.0 \mathrm{~V}$
4 $2.5 \mathrm{~V}$
Shift-2