If the maximum wavelength in the sun spectrum 2max =480 nm and a = 2.89x10* K.m calculate the sun surface temperature
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- The human eye is most sensitive to 560-nm (green) light. What is the temperature of a blackbody that would radiate most intensely at this wavelength?A stars wavelength is observed to be 200 nm. Calculate the approximate surface temperature of the starFor 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?
- Calculate the de Broglie wavelength of an electron moving with 1/3rd of the speed of light in vacuum. (Neglect relativistic effect) (Planck's constant : h = 6.63 × 10-34 Js, Mass of electrons : m = 9.11 × 10-28 g) %3DConsider a photon of 11.5-nm wavelength light. pγ = 5.76E-26 ve = 63320 KEe = 1.8E-21 What is the ratio of the energy of the photon to the kinetic energy of the electron? (Ey/KEe)Attached is question.
- What is the total emittance of a cesium lamp at 2473.15 K with a lambda max of 1171.38 nm at this temperature.ASS 3. When light with a wavelength of 222 nm is incident on a certain metal surface, electrons are ejected with a maximum kinetic energy of 3.16 × 10-¹⁹ J. Determine the wavelength of light that should be used to quadruple the maximum kinetic energy of the electrons ejected from this surface. nm fo 0 ssf60€ ssf606 5 09588 09 ssf60 ssf60Calculate the energy of a photon of wavelength 600 nm (or 600 x 10-9 m).