C Hall effect matches with current electricity and not with work function work function matches with photoelectric effect and thermionic effect.
UP CPMT-2002
Dual nature of radiation and Matter
142012
In photoelectric effect, as the intensity of incident light increases
1 kinetic energy of emitted photoelectrons decreases
2 kinetic energy of emitted photoelectrons increases
3 photoelectric current decreases
4 Photoelectric current increases
Explanation:
D According to Einstein's theory of photoelectric effect a single incident photon ejects a single electrons. Therefore, when intensity increases, the number of incident photons increases so number of ejected electrons increases, hence, photoelectron current increases.
MHT-CET 2020
Dual nature of radiation and Matter
142014
If the frequency of incident radiation is kept constant and the experiment is repeated by using incident light of different intensities, then stopping potential $\left(\mathrm{V}_{\mathrm{s}}\right)$
1 depends upon current
2 increases with increase in intensity
3 decreases with increase in intensity
4 remains same
Explanation:
D Changing the intensity of incident radiation does not effect the stopping potential. As the intensity increases the number of photoelectrons ejected increases. However, the maximum velocity attained by them remains independent of the intensity of radiation; It only depends on the frequency of incident radiation. Stopping potential is given by $\mathrm{eV}_{\mathrm{o}}=\mathrm{h}\left(\mathrm{v}-\mathrm{v}_{\mathrm{o}}\right)$.
MHT-CET 2020
Dual nature of radiation and Matter
142016
A light of frequency ' $v$ ' is incident on the metal surface whose threshold frequency is ' $v_{0}$ '. If $v=$ $v_{0}$, then [ $c=$ speed of light in medium]
1 the photoelectric effect is possible
2 emitted electrons will move with speed less than $\mathrm{c}$.
3 the photoelectric effect is not possible
4 emitted electrons will move with speed of light, c.
Explanation:
A According to question a light of frequency $v$ is incident on the metal surface having threshold frequency $v_{0}$, when frequency of light is equal to threshold frequency of metal surface than photoelectric effect is possible.
C Hall effect matches with current electricity and not with work function work function matches with photoelectric effect and thermionic effect.
UP CPMT-2002
Dual nature of radiation and Matter
142012
In photoelectric effect, as the intensity of incident light increases
1 kinetic energy of emitted photoelectrons decreases
2 kinetic energy of emitted photoelectrons increases
3 photoelectric current decreases
4 Photoelectric current increases
Explanation:
D According to Einstein's theory of photoelectric effect a single incident photon ejects a single electrons. Therefore, when intensity increases, the number of incident photons increases so number of ejected electrons increases, hence, photoelectron current increases.
MHT-CET 2020
Dual nature of radiation and Matter
142014
If the frequency of incident radiation is kept constant and the experiment is repeated by using incident light of different intensities, then stopping potential $\left(\mathrm{V}_{\mathrm{s}}\right)$
1 depends upon current
2 increases with increase in intensity
3 decreases with increase in intensity
4 remains same
Explanation:
D Changing the intensity of incident radiation does not effect the stopping potential. As the intensity increases the number of photoelectrons ejected increases. However, the maximum velocity attained by them remains independent of the intensity of radiation; It only depends on the frequency of incident radiation. Stopping potential is given by $\mathrm{eV}_{\mathrm{o}}=\mathrm{h}\left(\mathrm{v}-\mathrm{v}_{\mathrm{o}}\right)$.
MHT-CET 2020
Dual nature of radiation and Matter
142016
A light of frequency ' $v$ ' is incident on the metal surface whose threshold frequency is ' $v_{0}$ '. If $v=$ $v_{0}$, then [ $c=$ speed of light in medium]
1 the photoelectric effect is possible
2 emitted electrons will move with speed less than $\mathrm{c}$.
3 the photoelectric effect is not possible
4 emitted electrons will move with speed of light, c.
Explanation:
A According to question a light of frequency $v$ is incident on the metal surface having threshold frequency $v_{0}$, when frequency of light is equal to threshold frequency of metal surface than photoelectric effect is possible.
C Hall effect matches with current electricity and not with work function work function matches with photoelectric effect and thermionic effect.
UP CPMT-2002
Dual nature of radiation and Matter
142012
In photoelectric effect, as the intensity of incident light increases
1 kinetic energy of emitted photoelectrons decreases
2 kinetic energy of emitted photoelectrons increases
3 photoelectric current decreases
4 Photoelectric current increases
Explanation:
D According to Einstein's theory of photoelectric effect a single incident photon ejects a single electrons. Therefore, when intensity increases, the number of incident photons increases so number of ejected electrons increases, hence, photoelectron current increases.
MHT-CET 2020
Dual nature of radiation and Matter
142014
If the frequency of incident radiation is kept constant and the experiment is repeated by using incident light of different intensities, then stopping potential $\left(\mathrm{V}_{\mathrm{s}}\right)$
1 depends upon current
2 increases with increase in intensity
3 decreases with increase in intensity
4 remains same
Explanation:
D Changing the intensity of incident radiation does not effect the stopping potential. As the intensity increases the number of photoelectrons ejected increases. However, the maximum velocity attained by them remains independent of the intensity of radiation; It only depends on the frequency of incident radiation. Stopping potential is given by $\mathrm{eV}_{\mathrm{o}}=\mathrm{h}\left(\mathrm{v}-\mathrm{v}_{\mathrm{o}}\right)$.
MHT-CET 2020
Dual nature of radiation and Matter
142016
A light of frequency ' $v$ ' is incident on the metal surface whose threshold frequency is ' $v_{0}$ '. If $v=$ $v_{0}$, then [ $c=$ speed of light in medium]
1 the photoelectric effect is possible
2 emitted electrons will move with speed less than $\mathrm{c}$.
3 the photoelectric effect is not possible
4 emitted electrons will move with speed of light, c.
Explanation:
A According to question a light of frequency $v$ is incident on the metal surface having threshold frequency $v_{0}$, when frequency of light is equal to threshold frequency of metal surface than photoelectric effect is possible.
C Hall effect matches with current electricity and not with work function work function matches with photoelectric effect and thermionic effect.
UP CPMT-2002
Dual nature of radiation and Matter
142012
In photoelectric effect, as the intensity of incident light increases
1 kinetic energy of emitted photoelectrons decreases
2 kinetic energy of emitted photoelectrons increases
3 photoelectric current decreases
4 Photoelectric current increases
Explanation:
D According to Einstein's theory of photoelectric effect a single incident photon ejects a single electrons. Therefore, when intensity increases, the number of incident photons increases so number of ejected electrons increases, hence, photoelectron current increases.
MHT-CET 2020
Dual nature of radiation and Matter
142014
If the frequency of incident radiation is kept constant and the experiment is repeated by using incident light of different intensities, then stopping potential $\left(\mathrm{V}_{\mathrm{s}}\right)$
1 depends upon current
2 increases with increase in intensity
3 decreases with increase in intensity
4 remains same
Explanation:
D Changing the intensity of incident radiation does not effect the stopping potential. As the intensity increases the number of photoelectrons ejected increases. However, the maximum velocity attained by them remains independent of the intensity of radiation; It only depends on the frequency of incident radiation. Stopping potential is given by $\mathrm{eV}_{\mathrm{o}}=\mathrm{h}\left(\mathrm{v}-\mathrm{v}_{\mathrm{o}}\right)$.
MHT-CET 2020
Dual nature of radiation and Matter
142016
A light of frequency ' $v$ ' is incident on the metal surface whose threshold frequency is ' $v_{0}$ '. If $v=$ $v_{0}$, then [ $c=$ speed of light in medium]
1 the photoelectric effect is possible
2 emitted electrons will move with speed less than $\mathrm{c}$.
3 the photoelectric effect is not possible
4 emitted electrons will move with speed of light, c.
Explanation:
A According to question a light of frequency $v$ is incident on the metal surface having threshold frequency $v_{0}$, when frequency of light is equal to threshold frequency of metal surface than photoelectric effect is possible.
