142337 A metal surface is illuminated by a radiation of wavelength $4500 \AA$. The ejected photo-electron enters a constant magnetic field of $2 \mathrm{mT}$ making an angle of $90^{\circ}$ with the magnetic field. If it starts revolving in a circular path of radius $2 \mathrm{~mm}$. the work function of the metal is approximately:

142343 Light of different frequencies, whose photons have energies $3 \mathrm{eV}$ and $18 \mathrm{eV}$ respectively, successively illuminate a metal of work function $2 \mathrm{eV}$. The ratio of the maximum speeds of the emitted electrons will be

142346 Assertion: When ultraviolet light is incident on a photocell, its stopping potential is $\mathrm{V}_{0}$ and the maximum kinetic energy of the photoelectrons is $\mathrm{K}_{\max }$. When the ultraviolet light is replaced by Xrays, both $\mathrm{V}_{0}$ and $\mathrm{K}_{\max }$ increase.
Reason: Photoelectrons are emitted with speeds ranging from zero to a maximum value because of the range of frequencies present in the incident light.

142350 In photoelectric emission process from a metal of work function $1.8 \mathrm{eV}$, the kinetic energy of most energetic electrons is $0.5 \mathrm{eV}$. The corresponding stopping potentials is

142351 The threshold frequency for a photo-sensitine metal is $3.3 \times 10^{14} \mathrm{~Hz}$. If light of frequency $8.2 \times 10^{14} \mathrm{~Hz}$ is incident on this metal, the cut-off voltage for the photo-electric emission is nearly

142337 A metal surface is illuminated by a radiation of wavelength $4500 \AA$. The ejected photo-electron enters a constant magnetic field of $2 \mathrm{mT}$ making an angle of $90^{\circ}$ with the magnetic field. If it starts revolving in a circular path of radius $2 \mathrm{~mm}$. the work function of the metal is approximately:

142343 Light of different frequencies, whose photons have energies $3 \mathrm{eV}$ and $18 \mathrm{eV}$ respectively, successively illuminate a metal of work function $2 \mathrm{eV}$. The ratio of the maximum speeds of the emitted electrons will be

142346 Assertion: When ultraviolet light is incident on a photocell, its stopping potential is $\mathrm{V}_{0}$ and the maximum kinetic energy of the photoelectrons is $\mathrm{K}_{\max }$. When the ultraviolet light is replaced by Xrays, both $\mathrm{V}_{0}$ and $\mathrm{K}_{\max }$ increase.
Reason: Photoelectrons are emitted with speeds ranging from zero to a maximum value because of the range of frequencies present in the incident light.

142350 In photoelectric emission process from a metal of work function $1.8 \mathrm{eV}$, the kinetic energy of most energetic electrons is $0.5 \mathrm{eV}$. The corresponding stopping potentials is

142351 The threshold frequency for a photo-sensitine metal is $3.3 \times 10^{14} \mathrm{~Hz}$. If light of frequency $8.2 \times 10^{14} \mathrm{~Hz}$ is incident on this metal, the cut-off voltage for the photo-electric emission is nearly

142337 A metal surface is illuminated by a radiation of wavelength $4500 \AA$. The ejected photo-electron enters a constant magnetic field of $2 \mathrm{mT}$ making an angle of $90^{\circ}$ with the magnetic field. If it starts revolving in a circular path of radius $2 \mathrm{~mm}$. the work function of the metal is approximately:

142343 Light of different frequencies, whose photons have energies $3 \mathrm{eV}$ and $18 \mathrm{eV}$ respectively, successively illuminate a metal of work function $2 \mathrm{eV}$. The ratio of the maximum speeds of the emitted electrons will be

142346 Assertion: When ultraviolet light is incident on a photocell, its stopping potential is $\mathrm{V}_{0}$ and the maximum kinetic energy of the photoelectrons is $\mathrm{K}_{\max }$. When the ultraviolet light is replaced by Xrays, both $\mathrm{V}_{0}$ and $\mathrm{K}_{\max }$ increase.
Reason: Photoelectrons are emitted with speeds ranging from zero to a maximum value because of the range of frequencies present in the incident light.

142350 In photoelectric emission process from a metal of work function $1.8 \mathrm{eV}$, the kinetic energy of most energetic electrons is $0.5 \mathrm{eV}$. The corresponding stopping potentials is

142351 The threshold frequency for a photo-sensitine metal is $3.3 \times 10^{14} \mathrm{~Hz}$. If light of frequency $8.2 \times 10^{14} \mathrm{~Hz}$ is incident on this metal, the cut-off voltage for the photo-electric emission is nearly

142337 A metal surface is illuminated by a radiation of wavelength $4500 \AA$. The ejected photo-electron enters a constant magnetic field of $2 \mathrm{mT}$ making an angle of $90^{\circ}$ with the magnetic field. If it starts revolving in a circular path of radius $2 \mathrm{~mm}$. the work function of the metal is approximately:

142343 Light of different frequencies, whose photons have energies $3 \mathrm{eV}$ and $18 \mathrm{eV}$ respectively, successively illuminate a metal of work function $2 \mathrm{eV}$. The ratio of the maximum speeds of the emitted electrons will be

142346 Assertion: When ultraviolet light is incident on a photocell, its stopping potential is $\mathrm{V}_{0}$ and the maximum kinetic energy of the photoelectrons is $\mathrm{K}_{\max }$. When the ultraviolet light is replaced by Xrays, both $\mathrm{V}_{0}$ and $\mathrm{K}_{\max }$ increase.
Reason: Photoelectrons are emitted with speeds ranging from zero to a maximum value because of the range of frequencies present in the incident light.

142350 In photoelectric emission process from a metal of work function $1.8 \mathrm{eV}$, the kinetic energy of most energetic electrons is $0.5 \mathrm{eV}$. The corresponding stopping potentials is

142351 The threshold frequency for a photo-sensitine metal is $3.3 \times 10^{14} \mathrm{~Hz}$. If light of frequency $8.2 \times 10^{14} \mathrm{~Hz}$ is incident on this metal, the cut-off voltage for the photo-electric emission is nearly

142337 A metal surface is illuminated by a radiation of wavelength $4500 \AA$. The ejected photo-electron enters a constant magnetic field of $2 \mathrm{mT}$ making an angle of $90^{\circ}$ with the magnetic field. If it starts revolving in a circular path of radius $2 \mathrm{~mm}$. the work function of the metal is approximately:

142343 Light of different frequencies, whose photons have energies $3 \mathrm{eV}$ and $18 \mathrm{eV}$ respectively, successively illuminate a metal of work function $2 \mathrm{eV}$. The ratio of the maximum speeds of the emitted electrons will be

142346 Assertion: When ultraviolet light is incident on a photocell, its stopping potential is $\mathrm{V}_{0}$ and the maximum kinetic energy of the photoelectrons is $\mathrm{K}_{\max }$. When the ultraviolet light is replaced by Xrays, both $\mathrm{V}_{0}$ and $\mathrm{K}_{\max }$ increase.
Reason: Photoelectrons are emitted with speeds ranging from zero to a maximum value because of the range of frequencies present in the incident light.

142350 In photoelectric emission process from a metal of work function $1.8 \mathrm{eV}$, the kinetic energy of most energetic electrons is $0.5 \mathrm{eV}$. The corresponding stopping potentials is

142351 The threshold frequency for a photo-sensitine metal is $3.3 \times 10^{14} \mathrm{~Hz}$. If light of frequency $8.2 \times 10^{14} \mathrm{~Hz}$ is incident on this metal, the cut-off voltage for the photo-electric emission is nearly