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

142260 A photon of energy $8 \mathrm{eV}$ is incident on metal surface of threshold frequency $1.6 \times 10^{15} \mathrm{~Hz}$. The kinetic energy of the photoelectrons emitted (in eV) : (Take h $=6 \times 10^{-34} \mathrm{~J}-\mathrm{s}$ )

1 1.6
2 6
3 2
4 1.2
5 2.6
Dual nature of radiation and Matter

142261 A graph regarding photoelectric effect is shown between the maximum kinetic energy of electrons and the frequency of the incident light. On the basis of the data as shown in the graph, calculate the work function.

1 $4 \mathrm{eV}$
2 $2 \mathrm{eV}$
3 $4.2 \mathrm{eV}$
4 $2.5 \mathrm{eV}$
Dual nature of radiation and Matter

142262 When light of wavelength $300 \mathrm{~nm}$ falls on a photoelectric emitter, photoelectrons are liberated. For another emitter, light of wavelength $600 \mathrm{~nm}$ is sufficient for liberating photoelectrons. The ratio of the work function of the two emitters is

1 $1: 2$
2 $2: 1$
3 $4: 1$
4 $1: 4$
Dual nature of radiation and Matter

142263 Maximum kinetic energy $E_{k}$ of a photoelectron varies with the frequency $v$ of the incident radiation as:

1
2
3
4
Dual nature of radiation and Matter

142260 A photon of energy $8 \mathrm{eV}$ is incident on metal surface of threshold frequency $1.6 \times 10^{15} \mathrm{~Hz}$. The kinetic energy of the photoelectrons emitted (in eV) : (Take h $=6 \times 10^{-34} \mathrm{~J}-\mathrm{s}$ )

1 1.6
2 6
3 2
4 1.2
5 2.6
Dual nature of radiation and Matter

142261 A graph regarding photoelectric effect is shown between the maximum kinetic energy of electrons and the frequency of the incident light. On the basis of the data as shown in the graph, calculate the work function.

1 $4 \mathrm{eV}$
2 $2 \mathrm{eV}$
3 $4.2 \mathrm{eV}$
4 $2.5 \mathrm{eV}$
Dual nature of radiation and Matter

142262 When light of wavelength $300 \mathrm{~nm}$ falls on a photoelectric emitter, photoelectrons are liberated. For another emitter, light of wavelength $600 \mathrm{~nm}$ is sufficient for liberating photoelectrons. The ratio of the work function of the two emitters is

1 $1: 2$
2 $2: 1$
3 $4: 1$
4 $1: 4$
Dual nature of radiation and Matter

142263 Maximum kinetic energy $E_{k}$ of a photoelectron varies with the frequency $v$ of the incident radiation as:

1
2
3
4
Dual nature of radiation and Matter

142260 A photon of energy $8 \mathrm{eV}$ is incident on metal surface of threshold frequency $1.6 \times 10^{15} \mathrm{~Hz}$. The kinetic energy of the photoelectrons emitted (in eV) : (Take h $=6 \times 10^{-34} \mathrm{~J}-\mathrm{s}$ )

1 1.6
2 6
3 2
4 1.2
5 2.6
Dual nature of radiation and Matter

142261 A graph regarding photoelectric effect is shown between the maximum kinetic energy of electrons and the frequency of the incident light. On the basis of the data as shown in the graph, calculate the work function.

1 $4 \mathrm{eV}$
2 $2 \mathrm{eV}$
3 $4.2 \mathrm{eV}$
4 $2.5 \mathrm{eV}$
Dual nature of radiation and Matter

142262 When light of wavelength $300 \mathrm{~nm}$ falls on a photoelectric emitter, photoelectrons are liberated. For another emitter, light of wavelength $600 \mathrm{~nm}$ is sufficient for liberating photoelectrons. The ratio of the work function of the two emitters is

1 $1: 2$
2 $2: 1$
3 $4: 1$
4 $1: 4$
Dual nature of radiation and Matter

142263 Maximum kinetic energy $E_{k}$ of a photoelectron varies with the frequency $v$ of the incident radiation as:

1
2
3
4
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Dual nature of radiation and Matter

142260 A photon of energy $8 \mathrm{eV}$ is incident on metal surface of threshold frequency $1.6 \times 10^{15} \mathrm{~Hz}$. The kinetic energy of the photoelectrons emitted (in eV) : (Take h $=6 \times 10^{-34} \mathrm{~J}-\mathrm{s}$ )

1 1.6
2 6
3 2
4 1.2
5 2.6
Dual nature of radiation and Matter

142261 A graph regarding photoelectric effect is shown between the maximum kinetic energy of electrons and the frequency of the incident light. On the basis of the data as shown in the graph, calculate the work function.

1 $4 \mathrm{eV}$
2 $2 \mathrm{eV}$
3 $4.2 \mathrm{eV}$
4 $2.5 \mathrm{eV}$
Dual nature of radiation and Matter

142262 When light of wavelength $300 \mathrm{~nm}$ falls on a photoelectric emitter, photoelectrons are liberated. For another emitter, light of wavelength $600 \mathrm{~nm}$ is sufficient for liberating photoelectrons. The ratio of the work function of the two emitters is

1 $1: 2$
2 $2: 1$
3 $4: 1$
4 $1: 4$
Dual nature of radiation and Matter

142263 Maximum kinetic energy $E_{k}$ of a photoelectron varies with the frequency $v$ of the incident radiation as:

1
2
3
4