Photoelectric Effect
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357678 Photons with energy \(5\,eV\) are incident on a cathode \(C\) in a photoelectric cell. The maximum energy of emitted photoelectrons is \(2\,eV\). When photons of energy \(6\,eV\) are incident on \(C\), no photoelectrons will reach the anode \(A\), the stopping potential of \(A\) relative to \(C\) is

1 \( + 3\;V\)
2 \( + 4\;V\)
3 \( - 1\;V\)
4 \( - 3\;V\)
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357679 When photons of energy hv fall on a metal plate of work function ' \(W_{0}\) ', photoelectrons of maximum kinetic energy \('K'\) are ejected. If the frequency of the radiation is doubled, the maximum kinetic energy of the ejected photo electrons will be

1 \(K+W_{0}\)
2 \(K + hv\)
3 \(K\)
4 \(2\;K\)
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357680 Photoelectric emission is observed from a metallic surface for frequencies \(v_{1}\) and \(v_{2}\) of the incident light \(\left(v_{1}>v_{2}\right)\). If the maximum values of kinetic energy of the photoelectrons emitted in the two cases are in the ratio \(1: 2 n\), then the threshold frequency of the metallic surface is:

1 \(\dfrac{\left(v_{1}-v_{2}\right)}{(n-1)}\)
2 \(\dfrac{\left(2 n v_{1}-v_{2}\right)}{(2 n-1)}\)
3 \(\dfrac{\left(n v_{2}-v_{1}\right)}{(n-1)}\)
4 \(\dfrac{\left(v_{1}-v_{2}\right)}{n}\)
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357681 The work function of a surface of a photosensitive material is \(6.2\,eV\). The wavelength of the incident radiation for which the stopping potential is \(5\;V\) lies in the

1 Visible region
2 \(X\) - ray region
3 Infrared region
4 Ultraviolet region
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357682 Photons of energy 5\(eV\) are incident on the cathode. Electrons reaching the anode have kinetic energies varying from 6 \(eV\) to 8 \(eV\) Find the work function of the metal
supporting img

1 \(4\,eV\)
2 \(7\,eV\)
3 \(2\,eV\)
4 \(5\,eV\)
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357678 Photons with energy \(5\,eV\) are incident on a cathode \(C\) in a photoelectric cell. The maximum energy of emitted photoelectrons is \(2\,eV\). When photons of energy \(6\,eV\) are incident on \(C\), no photoelectrons will reach the anode \(A\), the stopping potential of \(A\) relative to \(C\) is

1 \( + 3\;V\)
2 \( + 4\;V\)
3 \( - 1\;V\)
4 \( - 3\;V\)
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357679 When photons of energy hv fall on a metal plate of work function ' \(W_{0}\) ', photoelectrons of maximum kinetic energy \('K'\) are ejected. If the frequency of the radiation is doubled, the maximum kinetic energy of the ejected photo electrons will be

1 \(K+W_{0}\)
2 \(K + hv\)
3 \(K\)
4 \(2\;K\)
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357680 Photoelectric emission is observed from a metallic surface for frequencies \(v_{1}\) and \(v_{2}\) of the incident light \(\left(v_{1}>v_{2}\right)\). If the maximum values of kinetic energy of the photoelectrons emitted in the two cases are in the ratio \(1: 2 n\), then the threshold frequency of the metallic surface is:

1 \(\dfrac{\left(v_{1}-v_{2}\right)}{(n-1)}\)
2 \(\dfrac{\left(2 n v_{1}-v_{2}\right)}{(2 n-1)}\)
3 \(\dfrac{\left(n v_{2}-v_{1}\right)}{(n-1)}\)
4 \(\dfrac{\left(v_{1}-v_{2}\right)}{n}\)
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357681 The work function of a surface of a photosensitive material is \(6.2\,eV\). The wavelength of the incident radiation for which the stopping potential is \(5\;V\) lies in the

1 Visible region
2 \(X\) - ray region
3 Infrared region
4 Ultraviolet region
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357682 Photons of energy 5\(eV\) are incident on the cathode. Electrons reaching the anode have kinetic energies varying from 6 \(eV\) to 8 \(eV\) Find the work function of the metal
supporting img

1 \(4\,eV\)
2 \(7\,eV\)
3 \(2\,eV\)
4 \(5\,eV\)
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357678 Photons with energy \(5\,eV\) are incident on a cathode \(C\) in a photoelectric cell. The maximum energy of emitted photoelectrons is \(2\,eV\). When photons of energy \(6\,eV\) are incident on \(C\), no photoelectrons will reach the anode \(A\), the stopping potential of \(A\) relative to \(C\) is

1 \( + 3\;V\)
2 \( + 4\;V\)
3 \( - 1\;V\)
4 \( - 3\;V\)
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357679 When photons of energy hv fall on a metal plate of work function ' \(W_{0}\) ', photoelectrons of maximum kinetic energy \('K'\) are ejected. If the frequency of the radiation is doubled, the maximum kinetic energy of the ejected photo electrons will be

1 \(K+W_{0}\)
2 \(K + hv\)
3 \(K\)
4 \(2\;K\)
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357680 Photoelectric emission is observed from a metallic surface for frequencies \(v_{1}\) and \(v_{2}\) of the incident light \(\left(v_{1}>v_{2}\right)\). If the maximum values of kinetic energy of the photoelectrons emitted in the two cases are in the ratio \(1: 2 n\), then the threshold frequency of the metallic surface is:

1 \(\dfrac{\left(v_{1}-v_{2}\right)}{(n-1)}\)
2 \(\dfrac{\left(2 n v_{1}-v_{2}\right)}{(2 n-1)}\)
3 \(\dfrac{\left(n v_{2}-v_{1}\right)}{(n-1)}\)
4 \(\dfrac{\left(v_{1}-v_{2}\right)}{n}\)
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357681 The work function of a surface of a photosensitive material is \(6.2\,eV\). The wavelength of the incident radiation for which the stopping potential is \(5\;V\) lies in the

1 Visible region
2 \(X\) - ray region
3 Infrared region
4 Ultraviolet region
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357682 Photons of energy 5\(eV\) are incident on the cathode. Electrons reaching the anode have kinetic energies varying from 6 \(eV\) to 8 \(eV\) Find the work function of the metal
supporting img

1 \(4\,eV\)
2 \(7\,eV\)
3 \(2\,eV\)
4 \(5\,eV\)
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357678 Photons with energy \(5\,eV\) are incident on a cathode \(C\) in a photoelectric cell. The maximum energy of emitted photoelectrons is \(2\,eV\). When photons of energy \(6\,eV\) are incident on \(C\), no photoelectrons will reach the anode \(A\), the stopping potential of \(A\) relative to \(C\) is

1 \( + 3\;V\)
2 \( + 4\;V\)
3 \( - 1\;V\)
4 \( - 3\;V\)
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357679 When photons of energy hv fall on a metal plate of work function ' \(W_{0}\) ', photoelectrons of maximum kinetic energy \('K'\) are ejected. If the frequency of the radiation is doubled, the maximum kinetic energy of the ejected photo electrons will be

1 \(K+W_{0}\)
2 \(K + hv\)
3 \(K\)
4 \(2\;K\)
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357680 Photoelectric emission is observed from a metallic surface for frequencies \(v_{1}\) and \(v_{2}\) of the incident light \(\left(v_{1}>v_{2}\right)\). If the maximum values of kinetic energy of the photoelectrons emitted in the two cases are in the ratio \(1: 2 n\), then the threshold frequency of the metallic surface is:

1 \(\dfrac{\left(v_{1}-v_{2}\right)}{(n-1)}\)
2 \(\dfrac{\left(2 n v_{1}-v_{2}\right)}{(2 n-1)}\)
3 \(\dfrac{\left(n v_{2}-v_{1}\right)}{(n-1)}\)
4 \(\dfrac{\left(v_{1}-v_{2}\right)}{n}\)
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357681 The work function of a surface of a photosensitive material is \(6.2\,eV\). The wavelength of the incident radiation for which the stopping potential is \(5\;V\) lies in the

1 Visible region
2 \(X\) - ray region
3 Infrared region
4 Ultraviolet region
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357682 Photons of energy 5\(eV\) are incident on the cathode. Electrons reaching the anode have kinetic energies varying from 6 \(eV\) to 8 \(eV\) Find the work function of the metal
supporting img

1 \(4\,eV\)
2 \(7\,eV\)
3 \(2\,eV\)
4 \(5\,eV\)
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357678 Photons with energy \(5\,eV\) are incident on a cathode \(C\) in a photoelectric cell. The maximum energy of emitted photoelectrons is \(2\,eV\). When photons of energy \(6\,eV\) are incident on \(C\), no photoelectrons will reach the anode \(A\), the stopping potential of \(A\) relative to \(C\) is

1 \( + 3\;V\)
2 \( + 4\;V\)
3 \( - 1\;V\)
4 \( - 3\;V\)
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357679 When photons of energy hv fall on a metal plate of work function ' \(W_{0}\) ', photoelectrons of maximum kinetic energy \('K'\) are ejected. If the frequency of the radiation is doubled, the maximum kinetic energy of the ejected photo electrons will be

1 \(K+W_{0}\)
2 \(K + hv\)
3 \(K\)
4 \(2\;K\)
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357680 Photoelectric emission is observed from a metallic surface for frequencies \(v_{1}\) and \(v_{2}\) of the incident light \(\left(v_{1}>v_{2}\right)\). If the maximum values of kinetic energy of the photoelectrons emitted in the two cases are in the ratio \(1: 2 n\), then the threshold frequency of the metallic surface is:

1 \(\dfrac{\left(v_{1}-v_{2}\right)}{(n-1)}\)
2 \(\dfrac{\left(2 n v_{1}-v_{2}\right)}{(2 n-1)}\)
3 \(\dfrac{\left(n v_{2}-v_{1}\right)}{(n-1)}\)
4 \(\dfrac{\left(v_{1}-v_{2}\right)}{n}\)
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357681 The work function of a surface of a photosensitive material is \(6.2\,eV\). The wavelength of the incident radiation for which the stopping potential is \(5\;V\) lies in the

1 Visible region
2 \(X\) - ray region
3 Infrared region
4 Ultraviolet region
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357682 Photons of energy 5\(eV\) are incident on the cathode. Electrons reaching the anode have kinetic energies varying from 6 \(eV\) to 8 \(eV\) Find the work function of the metal
supporting img

1 \(4\,eV\)
2 \(7\,eV\)
3 \(2\,eV\)
4 \(5\,eV\)