Cengage JEE Mains Physics by B.M Sharma
If λ0 stands for mid-wavelength in the visible region, the de Broglie wavelength for 100 V electrons is nearest to
04
Jun
If λ0 stands for mid-wavelength in the visible region, the de Broglie wavelength for 100 V electrons is nearest to If λ0 stands for mid-wavelength in the visible region the de Broglie wavelength for 100 V electrons is nearest to June 4, 2021 Category: Cengage JEE Mains Physics by B.M Sharma , Chapter 28 - [...]
The KE of the photoelectrons is E when the incident wavelength is λ/2. The KE becomes 2E when the incident wavelength is λ/3. The work function of the metal is
04
Jun
The KE of the photoelectrons is E when the incident wavelength is λ/2. The KE becomes 2E when the incident wavelength is λ/3. The work function of the metal is The KE of the photoelectrons is E when the incident wavelength is λ/2. The KE becomes 2E when the incident wavelength is λ/3. The work [...]
The kinetic energy of an electron is E when the incident wavelength is λ To increase the KE of the electron to 2E, the incident wavelength must be.
04
Jun
The kinetic energy of an electron is E when the incident wavelength is λ To increase the KE of the electron to 2E, the incident wavelength must be. the incident wavelength must be The kinetic energy of an electron is E when the incident wavelength is λ To increase the KE of the electron to [...]
The ratio of moment of an electron and an α-particle which are accelerated from rest by a potential difference of 100 V is.
04
Jun
The ratio of moment of an electron and an α-particle which are accelerated from rest by a potential difference of 100 V is. The ratio of moment of an electron and an α-particle which are accelerated from rest by a potential difference of 100 V is. June 4, 2021 Category: Cengage JEE Mains Physics by [...]
Light of wavelength λ strikes a photoelectric surface and electrons are ejected with kinetic energy K. If K is to be increased to exactly twice its original value, the wavelength must be changed to λ′ such that.
04
Jun
Light of wavelength λ strikes a photoelectric surface and electrons are ejected with kinetic energy K. If K is to be increased to exactly twice its original value, the wavelength must be changed to λ′ such that. Light of wavelength λ strikes a photoelectric surface and electrons are ejected with kinetic energy K. If K [...]
Silver has a work function of 4.7 eV. When ultraviolet light of wavelength 100 mm is incident upon it, a potential of 7.7 V is required to stop the photo electrons from reaching the collector plate. How much potential will be required to stop the photoelectrons when light of wavelength 200 mm is incident upon silver?
04
Jun
Silver has a work function of 4.7 eV. When ultraviolet light of wavelength 100 mm is incident upon it, a potential of 7.7 V is required to stop the photo electrons from reaching the collector plate. How much potential will be required to stop the photoelectrons when light of wavelength 200 mm is incident upon [...]
If a photocell is illuminated with a radiation of 1240 A0, then stopping potential is found to be 8 V. The work function of the emitter and the threshold wavelength are
04
Jun
If a photocell is illuminated with a radiation of 1240 A0, then stopping potential is found to be 8 V. The work function of the emitter and the threshold wavelength are If a photocell is illuminated with a radiation of 1240 A0 then stopping potential is found to be 8 V. The work function of [...]
A material particle with a rest mass mo is moving with a velocity of light c. Then, the wavelength of the de Broglie wave associated with it is
04
Jun
A material particle with a rest mass mo is moving with a velocity of light c. Then, the wavelength of the de Broglie wave associated with it is A material particle with a rest mass mo is moving with a velocity of light c. Then the wavelength of the de Broglie wave associated with it [...]
A modern 200 W sodium street lamp emits yellow light of wavelength 0.6 μm. Assuming it to be 25% efficient in converting electrical energy to light, the number of photons of yellow light it emits per second is
04
Jun
A modern 200 W sodium street lamp emits yellow light of wavelength 0.6 μm. Assuming it to be 25% efficient in converting electrical energy to light, the number of photons of yellow light it emits per second is A modern 200 W sodium street lamp emits yellow light of wavelength 0.6 μm. Assuming it to [...]
The work function of a metallic surface is 5.01eV. The photo – electrons are emitted when light of wavelength 2000 Å falls on it . The potential difference applied to stop the fastest photo – electrons is [h=4.14×10^−15 eVsec]
04
Jun
The work function of a metallic surface is 5.01eV. The photo – electrons are emitted when light of wavelength 2000 Å falls on it . The potential difference applied to stop the fastest photo – electrons is [h=4.14×10^−15 eVsec] The work function of metal is W and λ is the wavelength of the incident radiation. [...]