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A light beam of wavelength 400 nm is incident on a metal plate of work function 2.2 eV. A particular electron absorbs a photon and makes two collisions before coming out of the metal. Assuming that 10% of the extra energy is lost to the metal in each collision, find the kinetic energy of this…
An ultraviolet light of wavelength 2000 angstrom causes photo emission from a surface. The stopping potential is 2 volt. Find the work function in electron volt and the maximum speed of the ejected photoelectrons. An ultraviolet light of wavelength 2000 angstrom…… :- Solution :- Using Einstein photoelectric equation, Now, as ⇒ vmax = 8.4…
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A photon with energy of 4.9 eV ejects photoelectrons from tungsten. When the ejected electron enters a constant magnetic field of strength B = 2.5 mT at an angle of 60∘ with the field direction, the maximum pitch of the helix described by the electron is found to be 2.7 mm. Find the work function…
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When a beam of 10.6 eV photons of intensity 2Wm-2 falls on a platinum surface of area 1.0×10−4 m2 and work function 5.6 eV, 53% of the incident photon eject photoelectrons. Find the number of photoelectrons emitted per second and their minimum and maximum energies (in eV). When a beam of 10.6 eV photons of intensity……. :- Solution….
Question :- The velocity of end A of a rigid rod placed between two smooth vertical walls is u along vertical direction. Find out the velocity of end B of that rod, rod always remains in contact with the vertical wall and also find the velocity of centre of rod. Also find equation of path of centre of…
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