Chapter 29 – Dual Nature of Matter and Radiation
Sahay Sir > Question Answers > AIIMS Last 24 Years Solved 1996 - 2019 Physics and Chemistry Video Solutions > Physics > Chapter 29 - Dual Nature of Matter and Radiation
When light of wavelength λ is incident on photosensitive surface, the stopping potential is V. When light of wavelength 3λ is incident on same surface, the stopping potential is V6. Threshold wavelength for the surface is
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Nov
When light of wavelength λ is incident on photosensitive surface, the stopping potential is V. When light of wavelength 3λ is incident on same surface, the stopping potential is V6. Threshold wavelength for the surface is the stopping potential is V. When light of wavelength 3λ is incident on same surface the stopping potential is [...]
The energy flux of sunlight reaching the surface of the earth is 1.388×10^3 Wm^−2. How many photons (nearly) per square metre are incident on the earth per second ? Assume that the photons in the sunlight have an average wavelength of 550 nm.
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Nov
The energy flux of sunlight reaching the surface of the earth is 1.388×10^3 Wm^−2. How many photons (nearly) per square metre are incident on the earth per second ? Assume that the photons in the sunlight have an average wavelength of 550 nm. What is the energy of photon whose wavelength is 6840 Å ? [...]
The potential difference V required for accelerating an electron to have the de Broglie wavelength of 1Å is
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Nov
The potential difference V required for accelerating an electron to have the de Broglie wavelength of 1Å is The potential difference V required for accelerating an electron to have the de Broglie wavelength of 1Å is November 28, 2020 Category: AIIMS Last 24 Years Solved 1996 - 2019 Physics and Chemistry Video Solutions , Chapter [...]
The maximum velocities of the photo- electrons ejected are v and 2v for the incident light of wavelength 400 nm and 250 nm on a metal surface respectively. The work function of the metal in terms of Planck’s constant h and velocity of light c is
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Nov
The maximum velocities of the photo- electrons ejected are v and 2v for the incident light of wavelength 400 nm and 250 nm on a metal surface respectively. The work function of the metal in terms of Planck’s constant h and velocity of light c is What is the energy of photon whose wavelength is [...]
Assertion : As work function of a material increases by some mechanism, it requires greater energy to excite the electrons from its surface. Reason : A plot of stopping potential (Vs) versus frequency (υ) for different metals, has greater slope for metals with greater work functions.
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Nov
Assertion : As work function of a material increases by some mechanism, it requires greater energy to excite the electrons from its surface. Reason : A plot of stopping potential (Vs) versus frequency (υ) for different metals, has greater slope for metals with greater work functions. Assertion : As work function of a material increases [...]
Assertion: On increasing the frequency of light larger number of photoelectrons are emitted. Reason : The number of electrons emitted is directly proportional to the intensity of incident light.
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Nov
Assertion: On increasing the frequency of light larger number of photoelectrons are emitted. Reason : The number of electrons emitted is directly proportional to the intensity of incident light. Assertion: On increasing the frequency of light larger number of photoelectrons are emitted. Reason : The number of electrons emitted is directly proportional to the intensity [...]
Assertion : The kinetic energy of the emitted photo-electrons changes only with a change in the frequency of the incident radiations. Reason : The kinetic energy of photoelectrons emitted by a photo-sensitive surface depends upon the intensity of the incident radiation.
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Nov
Assertion : The kinetic energy of the emitted photo-electrons changes only with a change in the frequency of the incident radiations. Reason : The kinetic energy of photoelectrons emitted by a photo-sensitive surface depends upon the intensity of the incident radiation. What is the energy of photon whose wavelength is 6840 Å ? November 28, [...]
Maximum velocity of the photoelectron emitted by a metal is 1.8×10^6 ms^−1. Take the value of specific charge of the electron is 1.8×10^11 C kg^−1. Then the stopping potential in volt is
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Nov
Maximum velocity of the photoelectron emitted by a metal is 1.8×10^6 ms^−1. Take the value of specific charge of the electron is 1.8×10^11 C kg^−1. Then the stopping potential in volt is Maximum velocity of the photoelectron emitted by a metal is 1.8×10^6 ms^−1. Take the value of specific charge of the electron is 1.8×10^11 [...]
A deutron has an energy of 4 MeV when accelerated through a potential difference V. What will be the energy of an α-particle accelerated by source V ?
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Nov
A deutron has an energy of 4 MeV when accelerated through a potential difference V. What will be the energy of an α-particle accelerated by source V ? A deutron has an energy of 4 MeV when accelerated through a potential difference V. What will be the energy of an α-particle accelerated by source V [...]
If the maximum kinetic energy of emitted photo electrons from a metal surface of work function 2.5 eV, is 1.7 eV. If wavelength of incident radiation is halved, then stopping potential will be
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Nov
If the maximum kinetic energy of emitted photo electrons from a metal surface of work function 2.5 eV, is 1.7 eV. If wavelength of incident radiation is halved, then stopping potential will be If the maximum kinetic energy of emitted photo electrons from a metal surface of work function 2.5 eV is 1.7 eV. If [...]