142142
Which one of the following graph represents the variation of maximum kinetic energy $\left(E_{K}\right)$ of the emitted electrons with frequency $v$ in photoelectric effect correctly? figure
1
2
3
4
Explanation:
D From Einstein photoelectric equation- $\mathrm{KE}=\mathrm{h} v-\mathrm{h} v_{\mathrm{o}}$ When $v=v_{\mathrm{o}}$ and $\mathrm{KE}=0$ It shows when frequency is greater than threshold frequency then only $\mathrm{KE}$ is obtained only option (d) represent correct relation between kinetic energy and frequency.
JIPMER-2012
Dual nature of radiation and Matter
142144
The work function of sodium is $2.3 \mathrm{eV}$. The threshold wavelength of sodium will be
142157
The incident photon involved in the photoelectric effect experiment:
1 completely disappear
2 comes out with increased frequency
3 comes out with a decreased frequency
4 comes out without changes in frequency
Explanation:
A We know that, $\mathrm{KE}_{\max }=\mathrm{E}-\phi$ $\mathrm{E}_{\text {photon }}=0$ Where, $\phi=$ work function After emission disappear the incident photon involved in the photoelectric effect completely disappear.
AP EAMCET(Medical)-2005
Dual nature of radiation and Matter
142160
Photoelectric current can be increased by using
1 higher frequency radiation
2 higher intensity radiation
3 higher work function of metal plates
4 None of the above
Explanation:
B According to photoelectric effect, phototelectric current $\mathrm{I}_{\mathrm{d}} \propto$ Intensity of light Hence, Photoelectric current increase as the intensity of radiation increases.
AP EAMCET-1993
Dual nature of radiation and Matter
142055
The photoelectric effect proves that
1 light travels in the form of quanta
2 light travels in the form of transverse waves
3 velocity of light is infinite
4 None of the above
Explanation:
A The photoelectric effect proves that light has particle like activity. The photoelectric effect happens when photons are shone on metal and electrons are ejected from the surface of that metal. The electrons that are ejected are determined by the wavelength of light which determines the energy of photons.
142142
Which one of the following graph represents the variation of maximum kinetic energy $\left(E_{K}\right)$ of the emitted electrons with frequency $v$ in photoelectric effect correctly? figure
1
2
3
4
Explanation:
D From Einstein photoelectric equation- $\mathrm{KE}=\mathrm{h} v-\mathrm{h} v_{\mathrm{o}}$ When $v=v_{\mathrm{o}}$ and $\mathrm{KE}=0$ It shows when frequency is greater than threshold frequency then only $\mathrm{KE}$ is obtained only option (d) represent correct relation between kinetic energy and frequency.
JIPMER-2012
Dual nature of radiation and Matter
142144
The work function of sodium is $2.3 \mathrm{eV}$. The threshold wavelength of sodium will be
142157
The incident photon involved in the photoelectric effect experiment:
1 completely disappear
2 comes out with increased frequency
3 comes out with a decreased frequency
4 comes out without changes in frequency
Explanation:
A We know that, $\mathrm{KE}_{\max }=\mathrm{E}-\phi$ $\mathrm{E}_{\text {photon }}=0$ Where, $\phi=$ work function After emission disappear the incident photon involved in the photoelectric effect completely disappear.
AP EAMCET(Medical)-2005
Dual nature of radiation and Matter
142160
Photoelectric current can be increased by using
1 higher frequency radiation
2 higher intensity radiation
3 higher work function of metal plates
4 None of the above
Explanation:
B According to photoelectric effect, phototelectric current $\mathrm{I}_{\mathrm{d}} \propto$ Intensity of light Hence, Photoelectric current increase as the intensity of radiation increases.
AP EAMCET-1993
Dual nature of radiation and Matter
142055
The photoelectric effect proves that
1 light travels in the form of quanta
2 light travels in the form of transverse waves
3 velocity of light is infinite
4 None of the above
Explanation:
A The photoelectric effect proves that light has particle like activity. The photoelectric effect happens when photons are shone on metal and electrons are ejected from the surface of that metal. The electrons that are ejected are determined by the wavelength of light which determines the energy of photons.
142142
Which one of the following graph represents the variation of maximum kinetic energy $\left(E_{K}\right)$ of the emitted electrons with frequency $v$ in photoelectric effect correctly? figure
1
2
3
4
Explanation:
D From Einstein photoelectric equation- $\mathrm{KE}=\mathrm{h} v-\mathrm{h} v_{\mathrm{o}}$ When $v=v_{\mathrm{o}}$ and $\mathrm{KE}=0$ It shows when frequency is greater than threshold frequency then only $\mathrm{KE}$ is obtained only option (d) represent correct relation between kinetic energy and frequency.
JIPMER-2012
Dual nature of radiation and Matter
142144
The work function of sodium is $2.3 \mathrm{eV}$. The threshold wavelength of sodium will be
142157
The incident photon involved in the photoelectric effect experiment:
1 completely disappear
2 comes out with increased frequency
3 comes out with a decreased frequency
4 comes out without changes in frequency
Explanation:
A We know that, $\mathrm{KE}_{\max }=\mathrm{E}-\phi$ $\mathrm{E}_{\text {photon }}=0$ Where, $\phi=$ work function After emission disappear the incident photon involved in the photoelectric effect completely disappear.
AP EAMCET(Medical)-2005
Dual nature of radiation and Matter
142160
Photoelectric current can be increased by using
1 higher frequency radiation
2 higher intensity radiation
3 higher work function of metal plates
4 None of the above
Explanation:
B According to photoelectric effect, phototelectric current $\mathrm{I}_{\mathrm{d}} \propto$ Intensity of light Hence, Photoelectric current increase as the intensity of radiation increases.
AP EAMCET-1993
Dual nature of radiation and Matter
142055
The photoelectric effect proves that
1 light travels in the form of quanta
2 light travels in the form of transverse waves
3 velocity of light is infinite
4 None of the above
Explanation:
A The photoelectric effect proves that light has particle like activity. The photoelectric effect happens when photons are shone on metal and electrons are ejected from the surface of that metal. The electrons that are ejected are determined by the wavelength of light which determines the energy of photons.
142142
Which one of the following graph represents the variation of maximum kinetic energy $\left(E_{K}\right)$ of the emitted electrons with frequency $v$ in photoelectric effect correctly? figure
1
2
3
4
Explanation:
D From Einstein photoelectric equation- $\mathrm{KE}=\mathrm{h} v-\mathrm{h} v_{\mathrm{o}}$ When $v=v_{\mathrm{o}}$ and $\mathrm{KE}=0$ It shows when frequency is greater than threshold frequency then only $\mathrm{KE}$ is obtained only option (d) represent correct relation between kinetic energy and frequency.
JIPMER-2012
Dual nature of radiation and Matter
142144
The work function of sodium is $2.3 \mathrm{eV}$. The threshold wavelength of sodium will be
142157
The incident photon involved in the photoelectric effect experiment:
1 completely disappear
2 comes out with increased frequency
3 comes out with a decreased frequency
4 comes out without changes in frequency
Explanation:
A We know that, $\mathrm{KE}_{\max }=\mathrm{E}-\phi$ $\mathrm{E}_{\text {photon }}=0$ Where, $\phi=$ work function After emission disappear the incident photon involved in the photoelectric effect completely disappear.
AP EAMCET(Medical)-2005
Dual nature of radiation and Matter
142160
Photoelectric current can be increased by using
1 higher frequency radiation
2 higher intensity radiation
3 higher work function of metal plates
4 None of the above
Explanation:
B According to photoelectric effect, phototelectric current $\mathrm{I}_{\mathrm{d}} \propto$ Intensity of light Hence, Photoelectric current increase as the intensity of radiation increases.
AP EAMCET-1993
Dual nature of radiation and Matter
142055
The photoelectric effect proves that
1 light travels in the form of quanta
2 light travels in the form of transverse waves
3 velocity of light is infinite
4 None of the above
Explanation:
A The photoelectric effect proves that light has particle like activity. The photoelectric effect happens when photons are shone on metal and electrons are ejected from the surface of that metal. The electrons that are ejected are determined by the wavelength of light which determines the energy of photons.
142142
Which one of the following graph represents the variation of maximum kinetic energy $\left(E_{K}\right)$ of the emitted electrons with frequency $v$ in photoelectric effect correctly? figure
1
2
3
4
Explanation:
D From Einstein photoelectric equation- $\mathrm{KE}=\mathrm{h} v-\mathrm{h} v_{\mathrm{o}}$ When $v=v_{\mathrm{o}}$ and $\mathrm{KE}=0$ It shows when frequency is greater than threshold frequency then only $\mathrm{KE}$ is obtained only option (d) represent correct relation between kinetic energy and frequency.
JIPMER-2012
Dual nature of radiation and Matter
142144
The work function of sodium is $2.3 \mathrm{eV}$. The threshold wavelength of sodium will be
142157
The incident photon involved in the photoelectric effect experiment:
1 completely disappear
2 comes out with increased frequency
3 comes out with a decreased frequency
4 comes out without changes in frequency
Explanation:
A We know that, $\mathrm{KE}_{\max }=\mathrm{E}-\phi$ $\mathrm{E}_{\text {photon }}=0$ Where, $\phi=$ work function After emission disappear the incident photon involved in the photoelectric effect completely disappear.
AP EAMCET(Medical)-2005
Dual nature of radiation and Matter
142160
Photoelectric current can be increased by using
1 higher frequency radiation
2 higher intensity radiation
3 higher work function of metal plates
4 None of the above
Explanation:
B According to photoelectric effect, phototelectric current $\mathrm{I}_{\mathrm{d}} \propto$ Intensity of light Hence, Photoelectric current increase as the intensity of radiation increases.
AP EAMCET-1993
Dual nature of radiation and Matter
142055
The photoelectric effect proves that
1 light travels in the form of quanta
2 light travels in the form of transverse waves
3 velocity of light is infinite
4 None of the above
Explanation:
A The photoelectric effect proves that light has particle like activity. The photoelectric effect happens when photons are shone on metal and electrons are ejected from the surface of that metal. The electrons that are ejected are determined by the wavelength of light which determines the energy of photons.
