Place the following radiations in ascending order of photon energy, giving approximate value to these energies: X -rays, Visible light, Infrared, Ultraviolet

Q: 7. (a) What is the energy of an X-ray photons, if it corresponds to a wavelength of 0.005 nm? (b)…

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Q: A dental X-ray typically affects 194 g of tissue and delivers about 3.6 µJ of energy using X-rays…

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Q: How many x-ray photons per second are created by an x-ray tube that produces a flux of x-rays having…

A: Power of x rays = 1.21 W Average energy per photon = 80 keV

Q: How much energy, in joules per mole (J/mol), does a photon in the microwave region of the EM…

A: Data provided:  Frequency (f) = 5.60×1010 s-1  Required: The energy of the photons in J/mol

Q: How many photons are contained in a flash of green light (525nm) That contains 189KJ of energy?

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Q: 3.24 A 3.0-V flashlight bulb draws (0,25 A, converting about 1.0% of the dissipated power into light…

A: Given

Q: What is the energy of a photon that has the same wavelength as a 12-eV electron? (Ans. 3.5 keV)

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Q: The threshold of dark-adapted (scotopic) vision is 4.5 ✕ 10−11 W/m2 at a central wavelength of 500…

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Q: Ex. 35: Determine the wavelength of photon emitted which has an energy at 2.5 eV.

A: To find-Wavelength of photon (λ)=?Given-Energy (E)=2.5 eVEnergy (E)=2.5×1.6×10-19 J

Q: Find the wavelength of photons that eject 0.100-eV electrons from potassium, given that the binding…

A: Given: Energy of ejected photon ( Kinetic Energy, KE ) = 0.100 eV = 1.60218 x 10-20 J Binding…

Q: What is the wavelength (in m) of a 2.06 eV photon? Find its frequency in hertz.

A: Given that, Energy of photon, E = 2.06 eV We know that Planck constant, h = 6.626 × 10-34Js…

Q: Assuming that 10.0% of a 100-W light bulb’s energy output is in the visible range (typical for…

A: Given:  power of bulb, P = 100 W  wavelength = 580 nm = 580 x 10-9 m  time, t = 1 second  efficiency…

Q: The intensity of blackbody radiation peaks at a wavelength of 513 nm.     Determine the power…

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Q: A 2.0-mW green laser ( λ = 532 nm) shines on a cesium photocathode (Φ =1.95 eV). Assume an…

A: Given: Wavelength, λ=532 nm=532×10-9 mϕ=1.95 eVAn efficiency of producing photoelectrons,…

Q: Ultraviolet radiation of wavelength 121 nm is used to irradiate a sample of potassium metal.  The…

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Q: Calculate the wavelength of a 3.58 eV photon in units of nm.

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Q: (a) If the power output of a 670 kHz radio station is 49.0 kW, how many photons per second are…

A: Given data: The frequency is f=670 kHz. The power is P=49.0 kW. The distance is r=125 km. Part (a)…

Q: If the power output of a 650-kHz radio station is 50.0 kW, how many photons per second are produced?

A: Frequency of a  photon f= 650 kHz Power of station P = 50kW so energy of one photon E= hf =…

Q: How many photons per second are emitted by the antenna of a microwave oven, if its power output is…

A: Relation between Power and Energy: Energy of a photon formula:

Nature of light

Light is transverse and electromagnetic radiation that exhibits the properties of a wave as well as a particle. For this reason, light is said to have a “dual nature.”