Chapter 17 – Dual Nature of Radiation
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Sodium and copper have work functions 2.3 eV and 4.5 eV respectively. Then, the ratio of the wavelengths is nearest to
29
Nov
Sodium and copper have work functions 2.3 eV and 4.5 eV respectively. Then, the ratio of the wavelengths is nearest to Sodium and copper have work functions 2.3 eV and 4.5 eV respectively. Then the ratio of the wavelengths is nearest to November 29, 2020 Category: Chapter 17 - Dual Nature of Radiation , JEE [...]
Two identical photo cathodes receive light of frequencies f1 and f2. if the velocities of the photoelectrons (of mass m) coming out are respectively v1 and v2, then
29
Nov
Two identical photo cathodes receive light of frequencies f1 and f2. if the velocities of the photoelectrons (of mass m) coming out are respectively v1 and v2, then then Two identical photo cathodes receive light of frequencies f1 and f2. if the velocities of the photoelectrons (of mass m) coming out are respectively v1 and [...]
A charged oil drop is suspended in a uniform field of 3×10^4 V/m so that it neither falls nor rises. The charge on the drop will be (take the mass of the charge =9.9×10^−15kg and g=10m/s^2)
29
Nov
A charged oil drop is suspended in a uniform field of 3×10^4 V/m so that it neither falls nor rises. The charge on the drop will be (take the mass of the charge =9.9×10^−15kg and g=10m/s^2) A charged oil drop is suspended in a uniform field of 3×10^4 V/m so that it neither falls nor [...]
The work function of a substance is 4.0 eV. The longest wavelength of light that can cause photoelectron emission from this substance is approximately
29
Nov
The work function of a substance is 4.0 eV. The longest wavelength of light that can cause photoelectron emission from this substance is approximately The work function of a substance is 4.0 eV. The longest wavelength of light that can cause photoelectron emission from this substance is approximately November 29, 2020 Category: Chapter 17 - [...]
According to Einstein’s photoelectric equation, the plot of the kinetic energy of the emitted photo electrons from a metal Vs the frequency, of the incident radiation gives straight line whose slope
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Nov
According to Einstein’s photoelectric equation, the plot of the kinetic energy of the emitted photo electrons from a metal Vs the frequency, of the incident radiation gives straight line whose slope According to Einstein's photoelectric equation of the incident radiation gives straight line whose slope the plot of the kinetic energy of the emitted photo [...]
If the kinetic energy of a free electron doubles, it’s de-Broglie wavelength changes by the factor
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Nov
If the kinetic energy of a free electron doubles, it’s de-Broglie wavelength changes by the factor If the kinetic energy of a free electron doubles it’s de-Broglie wavelength changes by the factor November 29, 2020 Category: Chapter 17 - Dual Nature of Radiation , JEE Mains Physics 2002-2019 Solved Video Solutions ,
A Photocell is illuminated by a small bright source placed 1m away. When the same source of light is placed 1/2m away, the number of electrons emitted by photocathode would :
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Nov
A Photocell is illuminated by a small bright source placed 1m away. When the same source of light is placed 1/2m away, the number of electrons emitted by photocathode would : A Photocell is illuminated by a small bright source placed 1m away. When the same source of light is placed 1/2m away the number [...]
A uniform electric field and a uniform magnetic field are acting along the same direction in a certain region. If an electron is projected along the direction of the fields with a certain velocity, then :
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Nov
A uniform electric field and a uniform magnetic field are acting along the same direction in a certain region. If an electron is projected along the direction of the fields with a certain velocity, then : A uniform electric field and a uniform magnetic field are acting along the same direction in a certain region. [...]
The anode voltage of a photocell is kept fixed. The wavelength λ of the light falling on the cathode is gradually changed. The plate current I of photocell varies as follows
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Nov
The anode voltage of a photocell is kept fixed. The wavelength λ of the light falling on the cathode is gradually changed. The plate current I of photocell varies as follows The anode voltage of a photocell is kept fixed. The wavelength λ of the light falling on the cathode is gradually changed. The plate [...]
The time taken by a photoelectron to come out after the photon strikes is approximately :
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Nov
The time taken by a photoelectron to come out after the photon strikes is approximately : The time taken by a photoelectron to come out after the photon strikes is approximately : November 29, 2020 Category: Chapter 17 - Dual Nature of Radiation , JEE Mains Physics 2002-2019 Solved Video Solutions ,