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

142166 The variation of stopping potential $\left(V_{0}\right)$ as a function of the frequency $(v)$ of the incident light for a metal is shown in figure. The work function of the surface is

1 $18.6 \mathrm{eV}$
2 $2.98 \mathrm{eV}$
3 $2.07 \mathrm{eV}$
4 $1.36 \mathrm{eV}$
Shift-II
Dual nature of radiation and Matter

142167 The difference between threshold wavelengths for two metal surfaces $A$ and $B$ having work function $\phi_{\mathrm{A}}=9 \mathrm{eV}$ and $\phi_{\mathrm{B}}=4.5 \mathrm{eV}$ in $\mathrm{nm}$ is :
(Given, hc $=1242 \mathrm{eV} \mathrm{nm}$ )

1 264
2 138
3 276
4 540
Shift-I
Dual nature of radiation and Matter

142168 Given below are two statements :
Statement I : Out of microwaves, infrared rays and ultraviolet rays, ultraviolet rays are the most effective for the emission of electrons from a metallic surface.
Statement II : Above the threshold frequency, the maximum kinetic energy of photoelectrons is inversely proportional to the frequency of the incident light.
In the light of above statements, choose the correct answer from the options given below

1 Statement I is true but Statement II is false
2 Both Statement I and Statement II are true
3 Statement I is false but Statement II is true
4 Both Statement I and Statement II are false
Shift-II
Dual nature of radiation and Matter

142170 The kinetic energy of the photoelectrons increases by $0.52 \mathrm{eV}$ when the wavelength of incident light is changed from $500 \mathrm{~nm}$ to another wavelength which is approximately

1 $1250 \mathrm{~nm}$
2 $1000 \mathrm{~nm}$
3 $700 \mathrm{~nm}$
4 $400 \mathrm{~nm}$
Karnataka CET-2022
Dual nature of radiation and Matter

142172 Radiations of two photons having energy thrice and nine times the work function of a metal are incident on the metal surface successively. The ratio of maximum velocities of photo electrons emitted in two cases are

1 $1: 3$
2 $1: \sqrt{3}$
3 $1: 4$
4 $1: 2$
Shift-I
NEET DIGITAL LIBRARY
Dual nature of radiation and Matter

142166 The variation of stopping potential $\left(V_{0}\right)$ as a function of the frequency $(v)$ of the incident light for a metal is shown in figure. The work function of the surface is

1 $18.6 \mathrm{eV}$
2 $2.98 \mathrm{eV}$
3 $2.07 \mathrm{eV}$
4 $1.36 \mathrm{eV}$
Shift-II
Dual nature of radiation and Matter

142167 The difference between threshold wavelengths for two metal surfaces $A$ and $B$ having work function $\phi_{\mathrm{A}}=9 \mathrm{eV}$ and $\phi_{\mathrm{B}}=4.5 \mathrm{eV}$ in $\mathrm{nm}$ is :
(Given, hc $=1242 \mathrm{eV} \mathrm{nm}$ )

1 264
2 138
3 276
4 540
Shift-I
Dual nature of radiation and Matter

142168 Given below are two statements :
Statement I : Out of microwaves, infrared rays and ultraviolet rays, ultraviolet rays are the most effective for the emission of electrons from a metallic surface.
Statement II : Above the threshold frequency, the maximum kinetic energy of photoelectrons is inversely proportional to the frequency of the incident light.
In the light of above statements, choose the correct answer from the options given below

1 Statement I is true but Statement II is false
2 Both Statement I and Statement II are true
3 Statement I is false but Statement II is true
4 Both Statement I and Statement II are false
Shift-II
Dual nature of radiation and Matter

142170 The kinetic energy of the photoelectrons increases by $0.52 \mathrm{eV}$ when the wavelength of incident light is changed from $500 \mathrm{~nm}$ to another wavelength which is approximately

1 $1250 \mathrm{~nm}$
2 $1000 \mathrm{~nm}$
3 $700 \mathrm{~nm}$
4 $400 \mathrm{~nm}$
Karnataka CET-2022
Dual nature of radiation and Matter

142172 Radiations of two photons having energy thrice and nine times the work function of a metal are incident on the metal surface successively. The ratio of maximum velocities of photo electrons emitted in two cases are

1 $1: 3$
2 $1: \sqrt{3}$
3 $1: 4$
4 $1: 2$
Shift-I
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Dual nature of radiation and Matter

142166 The variation of stopping potential $\left(V_{0}\right)$ as a function of the frequency $(v)$ of the incident light for a metal is shown in figure. The work function of the surface is

1 $18.6 \mathrm{eV}$
2 $2.98 \mathrm{eV}$
3 $2.07 \mathrm{eV}$
4 $1.36 \mathrm{eV}$
Shift-II
Dual nature of radiation and Matter

142167 The difference between threshold wavelengths for two metal surfaces $A$ and $B$ having work function $\phi_{\mathrm{A}}=9 \mathrm{eV}$ and $\phi_{\mathrm{B}}=4.5 \mathrm{eV}$ in $\mathrm{nm}$ is :
(Given, hc $=1242 \mathrm{eV} \mathrm{nm}$ )

1 264
2 138
3 276
4 540
Shift-I
Dual nature of radiation and Matter

142168 Given below are two statements :
Statement I : Out of microwaves, infrared rays and ultraviolet rays, ultraviolet rays are the most effective for the emission of electrons from a metallic surface.
Statement II : Above the threshold frequency, the maximum kinetic energy of photoelectrons is inversely proportional to the frequency of the incident light.
In the light of above statements, choose the correct answer from the options given below

1 Statement I is true but Statement II is false
2 Both Statement I and Statement II are true
3 Statement I is false but Statement II is true
4 Both Statement I and Statement II are false
Shift-II
Dual nature of radiation and Matter

142170 The kinetic energy of the photoelectrons increases by $0.52 \mathrm{eV}$ when the wavelength of incident light is changed from $500 \mathrm{~nm}$ to another wavelength which is approximately

1 $1250 \mathrm{~nm}$
2 $1000 \mathrm{~nm}$
3 $700 \mathrm{~nm}$
4 $400 \mathrm{~nm}$
Karnataka CET-2022
Dual nature of radiation and Matter

142172 Radiations of two photons having energy thrice and nine times the work function of a metal are incident on the metal surface successively. The ratio of maximum velocities of photo electrons emitted in two cases are

1 $1: 3$
2 $1: \sqrt{3}$
3 $1: 4$
4 $1: 2$
Shift-I
For More Updates join with Us
Dual nature of radiation and Matter

142166 The variation of stopping potential $\left(V_{0}\right)$ as a function of the frequency $(v)$ of the incident light for a metal is shown in figure. The work function of the surface is

1 $18.6 \mathrm{eV}$
2 $2.98 \mathrm{eV}$
3 $2.07 \mathrm{eV}$
4 $1.36 \mathrm{eV}$
Shift-II
Dual nature of radiation and Matter

142167 The difference between threshold wavelengths for two metal surfaces $A$ and $B$ having work function $\phi_{\mathrm{A}}=9 \mathrm{eV}$ and $\phi_{\mathrm{B}}=4.5 \mathrm{eV}$ in $\mathrm{nm}$ is :
(Given, hc $=1242 \mathrm{eV} \mathrm{nm}$ )

1 264
2 138
3 276
4 540
Shift-I
Dual nature of radiation and Matter

142168 Given below are two statements :
Statement I : Out of microwaves, infrared rays and ultraviolet rays, ultraviolet rays are the most effective for the emission of electrons from a metallic surface.
Statement II : Above the threshold frequency, the maximum kinetic energy of photoelectrons is inversely proportional to the frequency of the incident light.
In the light of above statements, choose the correct answer from the options given below

1 Statement I is true but Statement II is false
2 Both Statement I and Statement II are true
3 Statement I is false but Statement II is true
4 Both Statement I and Statement II are false
Shift-II
Dual nature of radiation and Matter

142170 The kinetic energy of the photoelectrons increases by $0.52 \mathrm{eV}$ when the wavelength of incident light is changed from $500 \mathrm{~nm}$ to another wavelength which is approximately

1 $1250 \mathrm{~nm}$
2 $1000 \mathrm{~nm}$
3 $700 \mathrm{~nm}$
4 $400 \mathrm{~nm}$
Karnataka CET-2022
Dual nature of radiation and Matter

142172 Radiations of two photons having energy thrice and nine times the work function of a metal are incident on the metal surface successively. The ratio of maximum velocities of photo electrons emitted in two cases are

1 $1: 3$
2 $1: \sqrt{3}$
3 $1: 4$
4 $1: 2$
Shift-I
NEET DIGITAL LIBRARY
Dual nature of radiation and Matter

142166 The variation of stopping potential $\left(V_{0}\right)$ as a function of the frequency $(v)$ of the incident light for a metal is shown in figure. The work function of the surface is

1 $18.6 \mathrm{eV}$
2 $2.98 \mathrm{eV}$
3 $2.07 \mathrm{eV}$
4 $1.36 \mathrm{eV}$
Shift-II
Dual nature of radiation and Matter

142167 The difference between threshold wavelengths for two metal surfaces $A$ and $B$ having work function $\phi_{\mathrm{A}}=9 \mathrm{eV}$ and $\phi_{\mathrm{B}}=4.5 \mathrm{eV}$ in $\mathrm{nm}$ is :
(Given, hc $=1242 \mathrm{eV} \mathrm{nm}$ )

1 264
2 138
3 276
4 540
Shift-I
Dual nature of radiation and Matter

142168 Given below are two statements :
Statement I : Out of microwaves, infrared rays and ultraviolet rays, ultraviolet rays are the most effective for the emission of electrons from a metallic surface.
Statement II : Above the threshold frequency, the maximum kinetic energy of photoelectrons is inversely proportional to the frequency of the incident light.
In the light of above statements, choose the correct answer from the options given below

1 Statement I is true but Statement II is false
2 Both Statement I and Statement II are true
3 Statement I is false but Statement II is true
4 Both Statement I and Statement II are false
Shift-II
Dual nature of radiation and Matter

142170 The kinetic energy of the photoelectrons increases by $0.52 \mathrm{eV}$ when the wavelength of incident light is changed from $500 \mathrm{~nm}$ to another wavelength which is approximately

1 $1250 \mathrm{~nm}$
2 $1000 \mathrm{~nm}$
3 $700 \mathrm{~nm}$
4 $400 \mathrm{~nm}$
Karnataka CET-2022
Dual nature of radiation and Matter

142172 Radiations of two photons having energy thrice and nine times the work function of a metal are incident on the metal surface successively. The ratio of maximum velocities of photo electrons emitted in two cases are

1 $1: 3$
2 $1: \sqrt{3}$
3 $1: 4$
4 $1: 2$
Shift-I