Photoelectric Effect
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PHXII11:DUAL NATURE OF RADIATION AND MATTER

357734 The work functions for metals \(A, B\) and \(C\) are respectively, \(1.92\,eV,2\,eV\) and \(5\,eV\). According to Einstein's equation, the metals which will emit photoelectrons for a radiation of wavelength \(4100\) \( \mathop A^{~~\circ} \) is/are

1 Only \(A\)
2 Only \(C\)
3 \(A\) and \(B\)
4 None of these
AIIMS - 2011
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357735 Light of frequency \(4\,{v_0}\) is incident on the metal of the threshold frequency \(v_{0}\). The maximum kinetic energy of the emitted photoelectrons is

1 \(2\,h{v_0}\)
2 \(\frac{1}{2}h{v_0}\)
3 \(\frac{3}{2}h{v_0}\)
4 \(3\,h{v_0}\)
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357736 When a metal surface is illuminated by light of wavelength \(400\;nm\) and \(200\;nm\), the maximum velocities of the photoelectrons ejected are \(v\) and 2 \(v\) respectively. The work function of the metal is ( \(h=\) planck's constant, \(c=\) velocity of light in air)

1 \(2.5\,hc \times {10^6}\;J\)
2 \(hc \times {10^6}\;J\)
3 \(1.6\,hc \times {10^6}\;J\)
4 \(0.5\,hc \times {10^6}\;J\)
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357737 A copper ball of radius \(1\;cm\) and work function \(4.47\,eV\) is irradiated with ultraviolet radiation of wavelength \(2500\mathop A\limits^o \). The effect of irradiation results in the emission of electrons from the ball. Further the ball will acquire charge and due to this there will be a finite value of the potential on the ball. The charge acquired by the ball is:

1 \(5.5 \times {10^{ - 13}}C\)
2 \(7.5 \times {10^{ - 13}}C\)
3 \(4.5 \times {10^{ - 12}}C\)
4 \(2.5 \times {10^{ - 11}}C\)
JEE - 2013
For More Updates join with Us
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357734 The work functions for metals \(A, B\) and \(C\) are respectively, \(1.92\,eV,2\,eV\) and \(5\,eV\). According to Einstein's equation, the metals which will emit photoelectrons for a radiation of wavelength \(4100\) \( \mathop A^{~~\circ} \) is/are

1 Only \(A\)
2 Only \(C\)
3 \(A\) and \(B\)
4 None of these
AIIMS - 2011
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357735 Light of frequency \(4\,{v_0}\) is incident on the metal of the threshold frequency \(v_{0}\). The maximum kinetic energy of the emitted photoelectrons is

1 \(2\,h{v_0}\)
2 \(\frac{1}{2}h{v_0}\)
3 \(\frac{3}{2}h{v_0}\)
4 \(3\,h{v_0}\)
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357736 When a metal surface is illuminated by light of wavelength \(400\;nm\) and \(200\;nm\), the maximum velocities of the photoelectrons ejected are \(v\) and 2 \(v\) respectively. The work function of the metal is ( \(h=\) planck's constant, \(c=\) velocity of light in air)

1 \(2.5\,hc \times {10^6}\;J\)
2 \(hc \times {10^6}\;J\)
3 \(1.6\,hc \times {10^6}\;J\)
4 \(0.5\,hc \times {10^6}\;J\)
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357737 A copper ball of radius \(1\;cm\) and work function \(4.47\,eV\) is irradiated with ultraviolet radiation of wavelength \(2500\mathop A\limits^o \). The effect of irradiation results in the emission of electrons from the ball. Further the ball will acquire charge and due to this there will be a finite value of the potential on the ball. The charge acquired by the ball is:

1 \(5.5 \times {10^{ - 13}}C\)
2 \(7.5 \times {10^{ - 13}}C\)
3 \(4.5 \times {10^{ - 12}}C\)
4 \(2.5 \times {10^{ - 11}}C\)
JEE - 2013
NEET DIGITAL LIBRARY
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357734 The work functions for metals \(A, B\) and \(C\) are respectively, \(1.92\,eV,2\,eV\) and \(5\,eV\). According to Einstein's equation, the metals which will emit photoelectrons for a radiation of wavelength \(4100\) \( \mathop A^{~~\circ} \) is/are

1 Only \(A\)
2 Only \(C\)
3 \(A\) and \(B\)
4 None of these
AIIMS - 2011
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357735 Light of frequency \(4\,{v_0}\) is incident on the metal of the threshold frequency \(v_{0}\). The maximum kinetic energy of the emitted photoelectrons is

1 \(2\,h{v_0}\)
2 \(\frac{1}{2}h{v_0}\)
3 \(\frac{3}{2}h{v_0}\)
4 \(3\,h{v_0}\)
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357736 When a metal surface is illuminated by light of wavelength \(400\;nm\) and \(200\;nm\), the maximum velocities of the photoelectrons ejected are \(v\) and 2 \(v\) respectively. The work function of the metal is ( \(h=\) planck's constant, \(c=\) velocity of light in air)

1 \(2.5\,hc \times {10^6}\;J\)
2 \(hc \times {10^6}\;J\)
3 \(1.6\,hc \times {10^6}\;J\)
4 \(0.5\,hc \times {10^6}\;J\)
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357737 A copper ball of radius \(1\;cm\) and work function \(4.47\,eV\) is irradiated with ultraviolet radiation of wavelength \(2500\mathop A\limits^o \). The effect of irradiation results in the emission of electrons from the ball. Further the ball will acquire charge and due to this there will be a finite value of the potential on the ball. The charge acquired by the ball is:

1 \(5.5 \times {10^{ - 13}}C\)
2 \(7.5 \times {10^{ - 13}}C\)
3 \(4.5 \times {10^{ - 12}}C\)
4 \(2.5 \times {10^{ - 11}}C\)
JEE - 2013
Join With Us for More Updates
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357734 The work functions for metals \(A, B\) and \(C\) are respectively, \(1.92\,eV,2\,eV\) and \(5\,eV\). According to Einstein's equation, the metals which will emit photoelectrons for a radiation of wavelength \(4100\) \( \mathop A^{~~\circ} \) is/are

1 Only \(A\)
2 Only \(C\)
3 \(A\) and \(B\)
4 None of these
AIIMS - 2011
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357735 Light of frequency \(4\,{v_0}\) is incident on the metal of the threshold frequency \(v_{0}\). The maximum kinetic energy of the emitted photoelectrons is

1 \(2\,h{v_0}\)
2 \(\frac{1}{2}h{v_0}\)
3 \(\frac{3}{2}h{v_0}\)
4 \(3\,h{v_0}\)
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357736 When a metal surface is illuminated by light of wavelength \(400\;nm\) and \(200\;nm\), the maximum velocities of the photoelectrons ejected are \(v\) and 2 \(v\) respectively. The work function of the metal is ( \(h=\) planck's constant, \(c=\) velocity of light in air)

1 \(2.5\,hc \times {10^6}\;J\)
2 \(hc \times {10^6}\;J\)
3 \(1.6\,hc \times {10^6}\;J\)
4 \(0.5\,hc \times {10^6}\;J\)
PHXII11:DUAL NATURE OF RADIATION AND MATTER

357737 A copper ball of radius \(1\;cm\) and work function \(4.47\,eV\) is irradiated with ultraviolet radiation of wavelength \(2500\mathop A\limits^o \). The effect of irradiation results in the emission of electrons from the ball. Further the ball will acquire charge and due to this there will be a finite value of the potential on the ball. The charge acquired by the ball is:

1 \(5.5 \times {10^{ - 13}}C\)
2 \(7.5 \times {10^{ - 13}}C\)
3 \(4.5 \times {10^{ - 12}}C\)
4 \(2.5 \times {10^{ - 11}}C\)
JEE - 2013
For More Updates join with Us