The average wavelength of the light cmitted by a certain 100 W light bulb is 4 x 10 * m. How many photons per second does the light bulb emit. (h and C are given).
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- For an electron to have the same momentum as a photon with a wavelength of 5.00 ´ 10-7 m, the electron must be moving with a speed of a 1.33 ´ 10-27 m/s b 6.87 ´ 10-4 m/s c 1.46 ´ 103 m/s d 3.00 ´ 108 m/sIf the average frequency of light coming from a 60 Watt light bulb is 6*10^14 Hz, how many photons stream out from the bulb each second?The work function of a material is found to be 4 eV. Electromagnetic radiation of frequency 6.8* 10 ^ 15 * Hz falls on it. What is the required potential to stop the photoelectrons?
- The mathematical equation for studying the photoelectric effect is hν = W + 1/2 meu2 where ν is the frequency of light shining on the metal; W is the energy needed to remove an electron from the metal; and me and u are the mass and speed of the ejected electron, respectively. In an experiment, a student found that a maximum wavelength of 351 nm is needed to just dislodge electrons from a metal surface. Calculate the velocity (in m/s) of an ejected electron when the student employed light with a wavelength of 283 nm.A beam of 400 nm light is adjusted to have the same intensity as a beam of 600 nm light. How does the number of photons in the 400nm beam, N400 compare to the number of photons, N600 in the 600 nm beam. Question 5 options: N400 = 2*N600 N400 = 32600 N400 = N600 N400 = 23600 N400 = 2600 None of the other responses are correct.An FM radio station of frequency 98.1 MHz puts out a signal of 50,000 W. How many photons/s are emitted?
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