What is the frequency of a photon having energy 2.1 X 10-30 J?
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What is the frequency of a photon having energy 2.1 X 10-30 J?
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- When ultraviolet radiation of 9.5 X 10 14 Hz is incident on a metal sheet, photoelectrons are produced that leave at a maximum speed of one thousandth of the speed of light in a vacuum. Calculate the threshold frequency of the metal.The red light photon has a wavelength of λ = 635 nm, find its energy E in eV (electron volt) units?Find the frequency of a photon of wavelength 436x10^-9 m , p= 1.5197x10^-27 kg.m/s ?!
- Find the energy of the following. Express your answers in units of electron volts, noting that 1 eV = 1.60 × 10-1⁹ J. (a) a photon having a frequency of 4.20 x 10¹7 Hz ev (b) a photon having a wavelength of 4.60 x 10² nm eVA photon has momentum of magnitude 2.48 x 10-28 kg.m/s. (a) What is the kinetic energy of this photon? (b) What is the wavelength of this photon? (c) In what region of the electromagnetic spectrum does it lie?Find the energy (in eV) of a photon with a frequency of 1.5 ✕ 1016 Hz.