Photoelectric Effect
NEET Test Series from KOTA - 10 Papers In MS WORD WhatsApp Here
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357687 Maximum velocity of the photoelectron emitted by a metal is \(1.8 \times {10^6}\;m{s^{ - 1}}\). Take the value of specific charge of the electron is \(1.8 \times {10^{11}}Ck{g^{ - 1}}\). Then the stopping potential in volt is

1 1
2 3
3 9
4 6
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357688 In an experiment on photoelectric effect, a student plots stopping potential \({V_o}\) against reciprocal of the wavelength \(\lambda\) of the incident light of two different metals \(A\) and \(B\). These are shown in the figure.

supporting img

Looking at the graphs, you can most appropriately say that:

1 Work function of metal \(B\) is greater than that of metal \(A\)
2 For light of certain wavelength falling on both metal, maximum kinetic energy of electrons emitted from \(A\) will be greater than those emitted from \(B\)
3 Work function of metal \(A\) is greater than that of metal \(B\)
4 Student data is not correct
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357689 The work function for a metal is 4 \(eV\) . To eject the photo electrons with zero velocity, the wavelength of incident light should be

1 2700 \( \mathop A^{~~\circ} \)
2 3125 \( \mathop A^{~~\circ} \)
3 1700 \( \mathop A^{~~\circ} \)
4 5900 \( \mathop A^{~~\circ} \)
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357690 The photoelectric threshold wavelength of silver is \(3250 \times {10^{ - 10}}\;m\). The velocity of the electron ejected from a silver surface by ultraviolet light of wavelength \(2536 \times {10^{ - 10}}\;m\) is :-
(Given \(h = 4.14 \times {10^{ - 15}}eVs\) and \(c = 3 \times {10^8}\;m{s^{ - 1}}\) )

1 \( \approx 6 \times {10^6}\;m{s^{ - 1}}\)
2 \( \approx 61 \times {10^3}\;m{s^{ - 1}}\)
3 \( \approx 0.3 \times {10^6}\;m{s^{ - 1}}\)
4 \( \approx 6 \times {10^5}\;m{s^{ - 1}}\)
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357687 Maximum velocity of the photoelectron emitted by a metal is \(1.8 \times {10^6}\;m{s^{ - 1}}\). Take the value of specific charge of the electron is \(1.8 \times {10^{11}}Ck{g^{ - 1}}\). Then the stopping potential in volt is

1 1
2 3
3 9
4 6
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357688 In an experiment on photoelectric effect, a student plots stopping potential \({V_o}\) against reciprocal of the wavelength \(\lambda\) of the incident light of two different metals \(A\) and \(B\). These are shown in the figure.

supporting img

Looking at the graphs, you can most appropriately say that:

1 Work function of metal \(B\) is greater than that of metal \(A\)
2 For light of certain wavelength falling on both metal, maximum kinetic energy of electrons emitted from \(A\) will be greater than those emitted from \(B\)
3 Work function of metal \(A\) is greater than that of metal \(B\)
4 Student data is not correct
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357689 The work function for a metal is 4 \(eV\) . To eject the photo electrons with zero velocity, the wavelength of incident light should be

1 2700 \( \mathop A^{~~\circ} \)
2 3125 \( \mathop A^{~~\circ} \)
3 1700 \( \mathop A^{~~\circ} \)
4 5900 \( \mathop A^{~~\circ} \)
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357690 The photoelectric threshold wavelength of silver is \(3250 \times {10^{ - 10}}\;m\). The velocity of the electron ejected from a silver surface by ultraviolet light of wavelength \(2536 \times {10^{ - 10}}\;m\) is :-
(Given \(h = 4.14 \times {10^{ - 15}}eVs\) and \(c = 3 \times {10^8}\;m{s^{ - 1}}\) )

1 \( \approx 6 \times {10^6}\;m{s^{ - 1}}\)
2 \( \approx 61 \times {10^3}\;m{s^{ - 1}}\)
3 \( \approx 0.3 \times {10^6}\;m{s^{ - 1}}\)
4 \( \approx 6 \times {10^5}\;m{s^{ - 1}}\)
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357687 Maximum velocity of the photoelectron emitted by a metal is \(1.8 \times {10^6}\;m{s^{ - 1}}\). Take the value of specific charge of the electron is \(1.8 \times {10^{11}}Ck{g^{ - 1}}\). Then the stopping potential in volt is

1 1
2 3
3 9
4 6
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357688 In an experiment on photoelectric effect, a student plots stopping potential \({V_o}\) against reciprocal of the wavelength \(\lambda\) of the incident light of two different metals \(A\) and \(B\). These are shown in the figure.

supporting img

Looking at the graphs, you can most appropriately say that:

1 Work function of metal \(B\) is greater than that of metal \(A\)
2 For light of certain wavelength falling on both metal, maximum kinetic energy of electrons emitted from \(A\) will be greater than those emitted from \(B\)
3 Work function of metal \(A\) is greater than that of metal \(B\)
4 Student data is not correct
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357689 The work function for a metal is 4 \(eV\) . To eject the photo electrons with zero velocity, the wavelength of incident light should be

1 2700 \( \mathop A^{~~\circ} \)
2 3125 \( \mathop A^{~~\circ} \)
3 1700 \( \mathop A^{~~\circ} \)
4 5900 \( \mathop A^{~~\circ} \)
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357690 The photoelectric threshold wavelength of silver is \(3250 \times {10^{ - 10}}\;m\). The velocity of the electron ejected from a silver surface by ultraviolet light of wavelength \(2536 \times {10^{ - 10}}\;m\) is :-
(Given \(h = 4.14 \times {10^{ - 15}}eVs\) and \(c = 3 \times {10^8}\;m{s^{ - 1}}\) )

1 \( \approx 6 \times {10^6}\;m{s^{ - 1}}\)
2 \( \approx 61 \times {10^3}\;m{s^{ - 1}}\)
3 \( \approx 0.3 \times {10^6}\;m{s^{ - 1}}\)
4 \( \approx 6 \times {10^5}\;m{s^{ - 1}}\)
NEET Test Series from KOTA - 10 Papers In MS WORD WhatsApp Here
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357687 Maximum velocity of the photoelectron emitted by a metal is \(1.8 \times {10^6}\;m{s^{ - 1}}\). Take the value of specific charge of the electron is \(1.8 \times {10^{11}}Ck{g^{ - 1}}\). Then the stopping potential in volt is

1 1
2 3
3 9
4 6
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357688 In an experiment on photoelectric effect, a student plots stopping potential \({V_o}\) against reciprocal of the wavelength \(\lambda\) of the incident light of two different metals \(A\) and \(B\). These are shown in the figure.

supporting img

Looking at the graphs, you can most appropriately say that:

1 Work function of metal \(B\) is greater than that of metal \(A\)
2 For light of certain wavelength falling on both metal, maximum kinetic energy of electrons emitted from \(A\) will be greater than those emitted from \(B\)
3 Work function of metal \(A\) is greater than that of metal \(B\)
4 Student data is not correct
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357689 The work function for a metal is 4 \(eV\) . To eject the photo electrons with zero velocity, the wavelength of incident light should be

1 2700 \( \mathop A^{~~\circ} \)
2 3125 \( \mathop A^{~~\circ} \)
3 1700 \( \mathop A^{~~\circ} \)
4 5900 \( \mathop A^{~~\circ} \)
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357690 The photoelectric threshold wavelength of silver is \(3250 \times {10^{ - 10}}\;m\). The velocity of the electron ejected from a silver surface by ultraviolet light of wavelength \(2536 \times {10^{ - 10}}\;m\) is :-
(Given \(h = 4.14 \times {10^{ - 15}}eVs\) and \(c = 3 \times {10^8}\;m{s^{ - 1}}\) )

1 \( \approx 6 \times {10^6}\;m{s^{ - 1}}\)
2 \( \approx 61 \times {10^3}\;m{s^{ - 1}}\)
3 \( \approx 0.3 \times {10^6}\;m{s^{ - 1}}\)
4 \( \approx 6 \times {10^5}\;m{s^{ - 1}}\)