Particle Nature of Electromagnetic Radiation
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CHXI02:STRUCTURE OF ATOM

307395 Light of wavelength \(\mathrm{\lambda}\) shines on a metal surface with intensity \(\mathrm{\mathrm{x}}\) and the metal emits \(\mathrm{\mathrm{Y}}\) electrons per second of average energy, Z. What will happen to \(\mathrm{\mathrm{Y}}\) and \(\mathrm{\mathrm{Z}}\) if \(\mathrm{\mathrm{x}}\) is doubled?

1 \(\mathrm{Y}\) will be doubled and \(\mathrm{Z}\) will become half
2 \(\mathrm{Y}\) will remain same and \(\mathrm{Z}\) will be doubled
3 Both \(\mathrm{Y}\) and \(\mathrm{Z}\) will be doubled
4 \(\mathrm{Y}\) will be doubled but \(\mathrm{Z}\) will remain same
CHXI02:STRUCTURE OF ATOM

307396 The minimum energy required to overcome the attractive forces of electron and surface of Ag metal is \({\rm{5}}{\rm{.52 \times 1}}{{\rm{0}}^{{\rm{ - 19}}}}{\rm{J}}\). What will be the maximum K.E. of electron ejected out from Ag which is being exposed to U. V. light of \({\rm{\lambda = 360}}\mathop {\rm{A}}\limits^ \circ \)?

1 \({\rm{36}}{\rm{.38 \times 1}}{{\rm{0}}^{{\rm{ - 19}}}}\,{\rm{Joule}}\)
2 \({\rm{49}}{\rm{.68 \times 1}}{{\rm{0}}^{{\rm{ - 19}}}}\,{\rm{Joule}}\)
3 \({\rm{57}}{\rm{.68 \times 1}}{{\rm{0}}^{{\rm{ - 19}}}}\,{\rm{Joule}}\)
4 \({\rm{67}}{\rm{.68 \times 1}}{{\rm{0}}^{{\rm{ - 19}}}}\,{\rm{Joule}}\)
CHXI02:STRUCTURE OF ATOM

307397 Light of wavelength \(\lambda\) falls on metal having work function hc \(/ \lambda_{0}\). Photoelectric effect will take place only if

1 \(\lambda \geq \lambda_{0}\)
2 \(\lambda \geq 2 \lambda_{0}\)
3 \(\lambda \leq \lambda_{0}\)
4 \(\lambda \leq \lambda_{0} / 2\)
CHXI02:STRUCTURE OF ATOM

307398 Read Assertion and Reason carefully and mark correct option.
Assertion :
In the photoelectric effect, the electrons are ejected from the metal surface as soon as the beam of light of frequency greater than threshold frequency strikes the surface.
Reason :
When the photon of any energy strikes an electron in the atom, transfer of energy from the photon to the electron takes place.

1 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
2 Assertion is correct but Reason is incorrect.
3 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
4 Assertion is incorrect but reason is correct.
JEE - 2023
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CHXI02:STRUCTURE OF ATOM

307395 Light of wavelength \(\mathrm{\lambda}\) shines on a metal surface with intensity \(\mathrm{\mathrm{x}}\) and the metal emits \(\mathrm{\mathrm{Y}}\) electrons per second of average energy, Z. What will happen to \(\mathrm{\mathrm{Y}}\) and \(\mathrm{\mathrm{Z}}\) if \(\mathrm{\mathrm{x}}\) is doubled?

1 \(\mathrm{Y}\) will be doubled and \(\mathrm{Z}\) will become half
2 \(\mathrm{Y}\) will remain same and \(\mathrm{Z}\) will be doubled
3 Both \(\mathrm{Y}\) and \(\mathrm{Z}\) will be doubled
4 \(\mathrm{Y}\) will be doubled but \(\mathrm{Z}\) will remain same
CHXI02:STRUCTURE OF ATOM

307396 The minimum energy required to overcome the attractive forces of electron and surface of Ag metal is \({\rm{5}}{\rm{.52 \times 1}}{{\rm{0}}^{{\rm{ - 19}}}}{\rm{J}}\). What will be the maximum K.E. of electron ejected out from Ag which is being exposed to U. V. light of \({\rm{\lambda = 360}}\mathop {\rm{A}}\limits^ \circ \)?

1 \({\rm{36}}{\rm{.38 \times 1}}{{\rm{0}}^{{\rm{ - 19}}}}\,{\rm{Joule}}\)
2 \({\rm{49}}{\rm{.68 \times 1}}{{\rm{0}}^{{\rm{ - 19}}}}\,{\rm{Joule}}\)
3 \({\rm{57}}{\rm{.68 \times 1}}{{\rm{0}}^{{\rm{ - 19}}}}\,{\rm{Joule}}\)
4 \({\rm{67}}{\rm{.68 \times 1}}{{\rm{0}}^{{\rm{ - 19}}}}\,{\rm{Joule}}\)
CHXI02:STRUCTURE OF ATOM

307397 Light of wavelength \(\lambda\) falls on metal having work function hc \(/ \lambda_{0}\). Photoelectric effect will take place only if

1 \(\lambda \geq \lambda_{0}\)
2 \(\lambda \geq 2 \lambda_{0}\)
3 \(\lambda \leq \lambda_{0}\)
4 \(\lambda \leq \lambda_{0} / 2\)
CHXI02:STRUCTURE OF ATOM

307398 Read Assertion and Reason carefully and mark correct option.
Assertion :
In the photoelectric effect, the electrons are ejected from the metal surface as soon as the beam of light of frequency greater than threshold frequency strikes the surface.
Reason :
When the photon of any energy strikes an electron in the atom, transfer of energy from the photon to the electron takes place.

1 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
2 Assertion is correct but Reason is incorrect.
3 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
4 Assertion is incorrect but reason is correct.
JEE - 2023
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CHXI02:STRUCTURE OF ATOM

307395 Light of wavelength \(\mathrm{\lambda}\) shines on a metal surface with intensity \(\mathrm{\mathrm{x}}\) and the metal emits \(\mathrm{\mathrm{Y}}\) electrons per second of average energy, Z. What will happen to \(\mathrm{\mathrm{Y}}\) and \(\mathrm{\mathrm{Z}}\) if \(\mathrm{\mathrm{x}}\) is doubled?

1 \(\mathrm{Y}\) will be doubled and \(\mathrm{Z}\) will become half
2 \(\mathrm{Y}\) will remain same and \(\mathrm{Z}\) will be doubled
3 Both \(\mathrm{Y}\) and \(\mathrm{Z}\) will be doubled
4 \(\mathrm{Y}\) will be doubled but \(\mathrm{Z}\) will remain same
CHXI02:STRUCTURE OF ATOM

307396 The minimum energy required to overcome the attractive forces of electron and surface of Ag metal is \({\rm{5}}{\rm{.52 \times 1}}{{\rm{0}}^{{\rm{ - 19}}}}{\rm{J}}\). What will be the maximum K.E. of electron ejected out from Ag which is being exposed to U. V. light of \({\rm{\lambda = 360}}\mathop {\rm{A}}\limits^ \circ \)?

1 \({\rm{36}}{\rm{.38 \times 1}}{{\rm{0}}^{{\rm{ - 19}}}}\,{\rm{Joule}}\)
2 \({\rm{49}}{\rm{.68 \times 1}}{{\rm{0}}^{{\rm{ - 19}}}}\,{\rm{Joule}}\)
3 \({\rm{57}}{\rm{.68 \times 1}}{{\rm{0}}^{{\rm{ - 19}}}}\,{\rm{Joule}}\)
4 \({\rm{67}}{\rm{.68 \times 1}}{{\rm{0}}^{{\rm{ - 19}}}}\,{\rm{Joule}}\)
CHXI02:STRUCTURE OF ATOM

307397 Light of wavelength \(\lambda\) falls on metal having work function hc \(/ \lambda_{0}\). Photoelectric effect will take place only if

1 \(\lambda \geq \lambda_{0}\)
2 \(\lambda \geq 2 \lambda_{0}\)
3 \(\lambda \leq \lambda_{0}\)
4 \(\lambda \leq \lambda_{0} / 2\)
CHXI02:STRUCTURE OF ATOM

307398 Read Assertion and Reason carefully and mark correct option.
Assertion :
In the photoelectric effect, the electrons are ejected from the metal surface as soon as the beam of light of frequency greater than threshold frequency strikes the surface.
Reason :
When the photon of any energy strikes an electron in the atom, transfer of energy from the photon to the electron takes place.

1 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
2 Assertion is correct but Reason is incorrect.
3 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
4 Assertion is incorrect but reason is correct.
JEE - 2023
NEET DIGITAL LIBRARY
CHXI02:STRUCTURE OF ATOM

307395 Light of wavelength \(\mathrm{\lambda}\) shines on a metal surface with intensity \(\mathrm{\mathrm{x}}\) and the metal emits \(\mathrm{\mathrm{Y}}\) electrons per second of average energy, Z. What will happen to \(\mathrm{\mathrm{Y}}\) and \(\mathrm{\mathrm{Z}}\) if \(\mathrm{\mathrm{x}}\) is doubled?

1 \(\mathrm{Y}\) will be doubled and \(\mathrm{Z}\) will become half
2 \(\mathrm{Y}\) will remain same and \(\mathrm{Z}\) will be doubled
3 Both \(\mathrm{Y}\) and \(\mathrm{Z}\) will be doubled
4 \(\mathrm{Y}\) will be doubled but \(\mathrm{Z}\) will remain same
CHXI02:STRUCTURE OF ATOM

307396 The minimum energy required to overcome the attractive forces of electron and surface of Ag metal is \({\rm{5}}{\rm{.52 \times 1}}{{\rm{0}}^{{\rm{ - 19}}}}{\rm{J}}\). What will be the maximum K.E. of electron ejected out from Ag which is being exposed to U. V. light of \({\rm{\lambda = 360}}\mathop {\rm{A}}\limits^ \circ \)?

1 \({\rm{36}}{\rm{.38 \times 1}}{{\rm{0}}^{{\rm{ - 19}}}}\,{\rm{Joule}}\)
2 \({\rm{49}}{\rm{.68 \times 1}}{{\rm{0}}^{{\rm{ - 19}}}}\,{\rm{Joule}}\)
3 \({\rm{57}}{\rm{.68 \times 1}}{{\rm{0}}^{{\rm{ - 19}}}}\,{\rm{Joule}}\)
4 \({\rm{67}}{\rm{.68 \times 1}}{{\rm{0}}^{{\rm{ - 19}}}}\,{\rm{Joule}}\)
CHXI02:STRUCTURE OF ATOM

307397 Light of wavelength \(\lambda\) falls on metal having work function hc \(/ \lambda_{0}\). Photoelectric effect will take place only if

1 \(\lambda \geq \lambda_{0}\)
2 \(\lambda \geq 2 \lambda_{0}\)
3 \(\lambda \leq \lambda_{0}\)
4 \(\lambda \leq \lambda_{0} / 2\)
CHXI02:STRUCTURE OF ATOM

307398 Read Assertion and Reason carefully and mark correct option.
Assertion :
In the photoelectric effect, the electrons are ejected from the metal surface as soon as the beam of light of frequency greater than threshold frequency strikes the surface.
Reason :
When the photon of any energy strikes an electron in the atom, transfer of energy from the photon to the electron takes place.

1 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
2 Assertion is correct but Reason is incorrect.
3 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
4 Assertion is incorrect but reason is correct.
JEE - 2023
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