1.1 The work function of barium and tungsten are 2.5' eV and 4.2 eV, respectively. Check whether these materials are useful in a photocell, which is to be used to detect visible light.
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- 4. A laser with a power of 1.0 mW has a beam radius of 1.0 mm. What is the peak value of the electric field in that beam?a. 490 V/mb. 840 V/mc. 65 V/md. 120 V/me. 22 V/mChatgpt answer vll be downvoted, show proper work with explanationIf a metal has a work function 4.3 eV what is the minimum frequency for photo-emission?A. 3.5 x 108 HzB. 3.0 x 1010 HzC. 10.0 x 108 HzD. 1.04 x 1015 HzE. 1.0 Hz
- In the photoelectric-effect experiment, as illustrated by the figure, a current is measured while light is shining on the cathode. But this does not appear to be a complete circuit, so how can there be a current? Explain.When we illuminate lead with ultraviolet light with a wavelength of 250 nm, suppose we find the maximum potential difference developed between the plates in the experimental setup shown in the figure to be 0.82 volts. From these data and the accepted value of hc, find the potential difference between the plates if the wavelength is 215 nm. Also find W for lead.Calculate the wavelength of an electron (mass= 9.109 x10-28 g) that is traveling 6.50 × 10³ m/s. i E
- Needs Complete typed solution with 100 % accuracy. Don't use chat gpt or ai i definitely upvote you.helpThe work function of aluminum is 4.26 ev. What is the maximum velocity of an electron emitted from aluminum after the absorption of a photon of wavelength 117 nm. Give your answer in m/s. Round your answer to 2 decimal places. Add your answer Question 10 A photon Compton scatters from an electron. At what scattering angle for the photon will the electron acquire the largest kinetic energy? 45 degrees 90 degrees C o degress D 180 degrees