Photoelectric Effect
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357704 When a certain photosensitive surface is illuminated with monochromatic light of frequency \(v\), the stopping potential for the photo current is \(\frac{{ - {V_0}}}{2}\). When the surface is illuminated by monochromatic light of frequency \(\dfrac{v}{2}\), the stopping potential is \( - {V_0}\). The threshold frequency for photoelectric emission is

1 \(\dfrac{4 v}{3}\)
2 \(2 v\)
3 \(\dfrac{5 v}{3}\)
4 \(\dfrac{3 v}{2}\)
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357705 Two photons of energies twice and thrice the work function of a metal are incident on the metal surface. Then the ratio of maximum velocities of the photoelectrons emitted in the two cases respectively, is

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

357706 On a photosensitive material, when frequency of incident radiation is increased by \(40 \%\), kinetic energy of emitted photoelectrons increases from \(0.4 \,{eV}\) to \(1.2 \,{eV}\). The work function of the material is

1 \(1.6\,eV\)
2 \(3.2\,eV\)
3 \(5.1\,eV\)
4 \(2.7\,eV\)
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357707 When monochromatic light of wavelength \(\lambda\) is incident on a metallic surface, the stopping potential for photoelectric current is \(3 V_{0}\). When the same surface is illuminated with light of wavelength \(2 \lambda\), the stopping potential is \(V_{0}\)
The threshold wavelength for this surface when photoelectric effect takes place is

1 \(\lambda\)
2 \(2 \lambda\)
3 \(3 \lambda\)
4 \(4 \lambda\)
NEET Test Series from KOTA - 10 Papers In MS WORD WhatsApp Here
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357704 When a certain photosensitive surface is illuminated with monochromatic light of frequency \(v\), the stopping potential for the photo current is \(\frac{{ - {V_0}}}{2}\). When the surface is illuminated by monochromatic light of frequency \(\dfrac{v}{2}\), the stopping potential is \( - {V_0}\). The threshold frequency for photoelectric emission is

1 \(\dfrac{4 v}{3}\)
2 \(2 v\)
3 \(\dfrac{5 v}{3}\)
4 \(\dfrac{3 v}{2}\)
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357705 Two photons of energies twice and thrice the work function of a metal are incident on the metal surface. Then the ratio of maximum velocities of the photoelectrons emitted in the two cases respectively, is

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

357706 On a photosensitive material, when frequency of incident radiation is increased by \(40 \%\), kinetic energy of emitted photoelectrons increases from \(0.4 \,{eV}\) to \(1.2 \,{eV}\). The work function of the material is

1 \(1.6\,eV\)
2 \(3.2\,eV\)
3 \(5.1\,eV\)
4 \(2.7\,eV\)
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357707 When monochromatic light of wavelength \(\lambda\) is incident on a metallic surface, the stopping potential for photoelectric current is \(3 V_{0}\). When the same surface is illuminated with light of wavelength \(2 \lambda\), the stopping potential is \(V_{0}\)
The threshold wavelength for this surface when photoelectric effect takes place is

1 \(\lambda\)
2 \(2 \lambda\)
3 \(3 \lambda\)
4 \(4 \lambda\)
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357704 When a certain photosensitive surface is illuminated with monochromatic light of frequency \(v\), the stopping potential for the photo current is \(\frac{{ - {V_0}}}{2}\). When the surface is illuminated by monochromatic light of frequency \(\dfrac{v}{2}\), the stopping potential is \( - {V_0}\). The threshold frequency for photoelectric emission is

1 \(\dfrac{4 v}{3}\)
2 \(2 v\)
3 \(\dfrac{5 v}{3}\)
4 \(\dfrac{3 v}{2}\)
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357705 Two photons of energies twice and thrice the work function of a metal are incident on the metal surface. Then the ratio of maximum velocities of the photoelectrons emitted in the two cases respectively, is

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

357706 On a photosensitive material, when frequency of incident radiation is increased by \(40 \%\), kinetic energy of emitted photoelectrons increases from \(0.4 \,{eV}\) to \(1.2 \,{eV}\). The work function of the material is

1 \(1.6\,eV\)
2 \(3.2\,eV\)
3 \(5.1\,eV\)
4 \(2.7\,eV\)
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357707 When monochromatic light of wavelength \(\lambda\) is incident on a metallic surface, the stopping potential for photoelectric current is \(3 V_{0}\). When the same surface is illuminated with light of wavelength \(2 \lambda\), the stopping potential is \(V_{0}\)
The threshold wavelength for this surface when photoelectric effect takes place is

1 \(\lambda\)
2 \(2 \lambda\)
3 \(3 \lambda\)
4 \(4 \lambda\)
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357704 When a certain photosensitive surface is illuminated with monochromatic light of frequency \(v\), the stopping potential for the photo current is \(\frac{{ - {V_0}}}{2}\). When the surface is illuminated by monochromatic light of frequency \(\dfrac{v}{2}\), the stopping potential is \( - {V_0}\). The threshold frequency for photoelectric emission is

1 \(\dfrac{4 v}{3}\)
2 \(2 v\)
3 \(\dfrac{5 v}{3}\)
4 \(\dfrac{3 v}{2}\)
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357705 Two photons of energies twice and thrice the work function of a metal are incident on the metal surface. Then the ratio of maximum velocities of the photoelectrons emitted in the two cases respectively, is

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

357706 On a photosensitive material, when frequency of incident radiation is increased by \(40 \%\), kinetic energy of emitted photoelectrons increases from \(0.4 \,{eV}\) to \(1.2 \,{eV}\). The work function of the material is

1 \(1.6\,eV\)
2 \(3.2\,eV\)
3 \(5.1\,eV\)
4 \(2.7\,eV\)
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357707 When monochromatic light of wavelength \(\lambda\) is incident on a metallic surface, the stopping potential for photoelectric current is \(3 V_{0}\). When the same surface is illuminated with light of wavelength \(2 \lambda\), the stopping potential is \(V_{0}\)
The threshold wavelength for this surface when photoelectric effect takes place is

1 \(\lambda\)
2 \(2 \lambda\)
3 \(3 \lambda\)
4 \(4 \lambda\)
NEET Test Series from KOTA - 10 Papers In MS WORD WhatsApp Here