Prove that the photoelectric effect cannot occur with a completely free electron, that is, one not bound to an atom. (Hint: Consider the reference frame in which the total
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A: Given : Wavelength of light = 650 nm = 650 *10-9 m Stopping Potential = 0.45 V Known : Speed of…
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Q: The cut-off wavelength for the photoelectric effect in a certain metal is 220 nm. If the wavelength…
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Q: The photoelectrons ejected in the photoelectric effect seem to appear instantaneously, without any…
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Q: (a) The energy needed to extract an electron from sodium is 2.3 eV. Would sodium exhibit a…
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Q: (a) In a particular photoelectric experiment, a stopping potential of V, is measured when light of…
A: Since you have posted a question with multiple subparts, we will answer first three subparts as per…
Q: The work function for cesium is 1.9 eV, the lowest of any metal. (a) Find the threshold frequency…
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Q: What is the maximum speed of the most energetic photo-electron that is liberated from the material?
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Q: The work function for platinum metal is 5.64 eV. In a photoelectric effect experiment, platinum is…
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Q: Light of wavelength 488 nm is produced by an argon laser which is used in the photoelectric effect.…
A: Given: wavelength = 488 nm = 488 x 10-9 m Stopping potential , V = 0.38 V
Q: An experiment is performed where light of different frequencies is shined on a sodium plate. The…
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Q: a) In an experiment to investigate the photoelectric effect, a metal surface is illuminated with…
A: The photoelectric effect is a phenomenon in physics where certain metals emit electrons when exposed…
Prove that the
that is, one not bound to an atom. (Hint: Consider the reference frame in which the total
momentum if the electron and the incident photon is zero.)
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- In the photoelectric effect (for a given target and a given frequency of the incident light), which of these quantities, if any, depend on the intensity of the incident light beam: (a) the maximum kinetic energy of the electrons, (b) the maximum photoelectric current, (c) the stopping potential, (d) the cutoff frequency?The photon emitted during the de-excitation from the 1st excited level to the ground state of hydrogen atom is used to irradiate a photo cathode of a photocell, in which stopping potential of 5 V is used. Calculate the work function of the cathode used.A dart gun contains a spring of spring constant k = 16 N/m which is used to shoot a dart of mass m. The dart leaves the gun at a speed of v = 3.1 m/s after the spring is compressed 1 cm. what is the darts speed when it hits the floor (vf in m/s) if it is fired horizontally at a height of h = 2 m what angle in degree does the darts final velocity make with the horizontal?
- ture of Light A photon with a momentum of 60 keV/c, which is scattered at a quasi-free electron at rest at an angle of 120°, hits the surface of a molybdenum plate after the scattering process and gives ise to the emission of an electron (work function of 20 keV) there due to the photoelectric effect. Calculate the kinetic energy of the photoelectron. the reflectivity in this case. silver surface (n2₂ =The threshold wavelength for a certain metal is 5000 ACalculate the maximum K.E. of the photoelectrons emitted, when ultra violet radiation of wavelength 2500 A falls on it. (1 eV, h and C are given).An experiment is performed where light of different frequencies is shined on an aluminum plate. The work function for aluminum is 4.08 eV. (a) What is the lowest frequency (the "cutoff" frequency, in Hz) of light incident on aluminum, below which no photoelectrons will be emitted from its surface? Hz (b) What is the longest wavelength (the "cutoff" wavelength, in nm) of light incident on aluminum, above which no photoelectrons will be emitted from its surface? nm (c) Photons of energy 5.75 eV are incident on the aluminum plate. What is the maximum kinetic energy (in eV) of the ejected photoelectrons? ev
- Light of wavelength 488 nm is produced by an argon laser which is used in the photoelectric effect. When light from this spectral line is incident on the emitter, the stopping (cut-off) potential of photoelectrons is 0.38 V. Find the work function of the material from which the emitter is made.Your results from a photoelectric-effect experiment show that the maximum speed of the emitted photoelectrons is 6.95 * 105 m/s when the cathode is illuminated with ultraviolet light of wavelength 306 nm. Find (a) the maximum photoelectron kinetic energy in eV, (b) the photon energy in eV, and (c) the work function.V1
- A silver ball of radius 4"8 cm is suspended by a thread in a vacuum chamber. Ultraviolet light of wavelength 200 nm is incident on the ball for some time during which a total light energy of 1.0 x 10-11 J falls on the surface. Assuming that on the average one photon out of every ten thousand is able to eject a photoelectron, find the electric potential at the surface of the ball assuming zero potential at infinity. What is the potential at the centre of the ball?In a photoelectric effect experiment, metal A with work function 5.47 eV absorbs monochromatic light and emits electrons that carry initial kinetic energy 2.77 eV. In another trial, metal B absorbs light with the same frequency but double intensity and emits electrons that carry initial kinetic energy 2.93 eV, what is the work function of metal B (in en?