141989 Light strikes a metal surface causing photoelectric emission. The wavelength of incident light is $248 \mathrm{~nm}$. If the stopping potential for the ejected electrons is $2.8 \mathrm{eV}$, then the work function of the metal is (Take he $=1240 \mathrm{eV} . \mathrm{nm}$ )
141991
In a photo electric experiment, the wavelength of the light incident on the metal is changed from $200 \mathrm{~nm}$ to $400 \mathrm{~nm}$. The decrease in the stopping potential is close to
[Use hc $=1240 \mathrm{eV}$-nm where $\mathrm{h}=$ Planck's constant and $\mathbf{c}$ is velocity of light]
141992
When monochromatic light falls on a photosensitive metal, an electron is emitted with maximum velocity $1.6 \times 10^{6} \mathrm{~m} / \mathrm{s}$. Find the stopping potential.
[charge of electron $=1.6 \times 10^{-19} \mathrm{C}$, mass of electron $\left.=9 \times 10^{-31} \mathrm{~kg}\right]$
141993
In a photoelectric effect, the maximum energy of the photoelectron is attained with exposure of $2000 \mathrm{~A}$ light. If the maximum kinetic energy of the photoelectron is $3 \mathrm{eV}$, the threshold wavelength will be
(use hc $=1240 \mathrm{ev} . \mathrm{nm}$ )
141989 Light strikes a metal surface causing photoelectric emission. The wavelength of incident light is $248 \mathrm{~nm}$. If the stopping potential for the ejected electrons is $2.8 \mathrm{eV}$, then the work function of the metal is (Take he $=1240 \mathrm{eV} . \mathrm{nm}$ )
141991
In a photo electric experiment, the wavelength of the light incident on the metal is changed from $200 \mathrm{~nm}$ to $400 \mathrm{~nm}$. The decrease in the stopping potential is close to
[Use hc $=1240 \mathrm{eV}$-nm where $\mathrm{h}=$ Planck's constant and $\mathbf{c}$ is velocity of light]
141992
When monochromatic light falls on a photosensitive metal, an electron is emitted with maximum velocity $1.6 \times 10^{6} \mathrm{~m} / \mathrm{s}$. Find the stopping potential.
[charge of electron $=1.6 \times 10^{-19} \mathrm{C}$, mass of electron $\left.=9 \times 10^{-31} \mathrm{~kg}\right]$
141993
In a photoelectric effect, the maximum energy of the photoelectron is attained with exposure of $2000 \mathrm{~A}$ light. If the maximum kinetic energy of the photoelectron is $3 \mathrm{eV}$, the threshold wavelength will be
(use hc $=1240 \mathrm{ev} . \mathrm{nm}$ )
141989 Light strikes a metal surface causing photoelectric emission. The wavelength of incident light is $248 \mathrm{~nm}$. If the stopping potential for the ejected electrons is $2.8 \mathrm{eV}$, then the work function of the metal is (Take he $=1240 \mathrm{eV} . \mathrm{nm}$ )
141991
In a photo electric experiment, the wavelength of the light incident on the metal is changed from $200 \mathrm{~nm}$ to $400 \mathrm{~nm}$. The decrease in the stopping potential is close to
[Use hc $=1240 \mathrm{eV}$-nm where $\mathrm{h}=$ Planck's constant and $\mathbf{c}$ is velocity of light]
141992
When monochromatic light falls on a photosensitive metal, an electron is emitted with maximum velocity $1.6 \times 10^{6} \mathrm{~m} / \mathrm{s}$. Find the stopping potential.
[charge of electron $=1.6 \times 10^{-19} \mathrm{C}$, mass of electron $\left.=9 \times 10^{-31} \mathrm{~kg}\right]$
141993
In a photoelectric effect, the maximum energy of the photoelectron is attained with exposure of $2000 \mathrm{~A}$ light. If the maximum kinetic energy of the photoelectron is $3 \mathrm{eV}$, the threshold wavelength will be
(use hc $=1240 \mathrm{ev} . \mathrm{nm}$ )
141989 Light strikes a metal surface causing photoelectric emission. The wavelength of incident light is $248 \mathrm{~nm}$. If the stopping potential for the ejected electrons is $2.8 \mathrm{eV}$, then the work function of the metal is (Take he $=1240 \mathrm{eV} . \mathrm{nm}$ )
141991
In a photo electric experiment, the wavelength of the light incident on the metal is changed from $200 \mathrm{~nm}$ to $400 \mathrm{~nm}$. The decrease in the stopping potential is close to
[Use hc $=1240 \mathrm{eV}$-nm where $\mathrm{h}=$ Planck's constant and $\mathbf{c}$ is velocity of light]
141992
When monochromatic light falls on a photosensitive metal, an electron is emitted with maximum velocity $1.6 \times 10^{6} \mathrm{~m} / \mathrm{s}$. Find the stopping potential.
[charge of electron $=1.6 \times 10^{-19} \mathrm{C}$, mass of electron $\left.=9 \times 10^{-31} \mathrm{~kg}\right]$
141993
In a photoelectric effect, the maximum energy of the photoelectron is attained with exposure of $2000 \mathrm{~A}$ light. If the maximum kinetic energy of the photoelectron is $3 \mathrm{eV}$, the threshold wavelength will be
(use hc $=1240 \mathrm{ev} . \mathrm{nm}$ )
141989 Light strikes a metal surface causing photoelectric emission. The wavelength of incident light is $248 \mathrm{~nm}$. If the stopping potential for the ejected electrons is $2.8 \mathrm{eV}$, then the work function of the metal is (Take he $=1240 \mathrm{eV} . \mathrm{nm}$ )
141991
In a photo electric experiment, the wavelength of the light incident on the metal is changed from $200 \mathrm{~nm}$ to $400 \mathrm{~nm}$. The decrease in the stopping potential is close to
[Use hc $=1240 \mathrm{eV}$-nm where $\mathrm{h}=$ Planck's constant and $\mathbf{c}$ is velocity of light]
141992
When monochromatic light falls on a photosensitive metal, an electron is emitted with maximum velocity $1.6 \times 10^{6} \mathrm{~m} / \mathrm{s}$. Find the stopping potential.
[charge of electron $=1.6 \times 10^{-19} \mathrm{C}$, mass of electron $\left.=9 \times 10^{-31} \mathrm{~kg}\right]$
141993
In a photoelectric effect, the maximum energy of the photoelectron is attained with exposure of $2000 \mathrm{~A}$ light. If the maximum kinetic energy of the photoelectron is $3 \mathrm{eV}$, the threshold wavelength will be
(use hc $=1240 \mathrm{ev} . \mathrm{nm}$ )