If the frequency of the emitted photon is 10 Hz, then the ratio Einstein's coefficients are 2.177 x 10-51 3.177 x 10-51 6.177 x 10-51
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- Data for the photoelectric effect of silver are given in the table. Frequency of incident radiation (1015 ?−1)(1015 s−1) Kinetic energy of ejected electrons (10−19 ?)(10−19 J) 2.00 5.90 2.50 9.21 3.00 12.52 3.50 15.84 4.00 19.15 Using these data, find the experimentally determined value of Planck's constant, ℎh , and the threshold frequency, ?0ν0 , for silver.The peak wavelength of radiation emitted by a black body at a temperature of 2000 K is 1.45 μm. If the peak wavelength of emitted radiation changes to 2.90 μm, then the temperature (in K) of the black body isWhat is the energy in joules of a proton with a wavelength of 7.50 x 10^-5m?
- An electron in the n = 9 energy level of hydrogen undergoes a transition to the n = 5 energy level. Determine the energy in eV, the energy in joules, and the frequency of the emitted photon (a) the energy in eV (eV) (b) the energy in joules (J) (c) the frequency of the emitted photon (Hz)For light with a wavelength of 350 nm and with an intensity of /= 10-8 W/m², what is the number of photons/(m²s) in the light beam?True or False: The peak wavelength of radiation emitted by a black body is inversely proportional to its temperature.
- Suppose photons are produced in a cathode ray tube (CRT) from electrons which are accelerated across a potential of 22 kV. Energy in electron volts of the photons is 22000. what is the maximum frequency, in hertz, of these photons?No photoelectrons are emitted from tungsten unless the wavelength of incoming light is less than 270 nm. If an experiment requires electrons with a maximum kinetic energy of 2.0 eV, what frequency of light should be used to illuminate the tungsten?