Voltage applied to an electron microscope to produce electrons of wavelength 40nm is* O 93.63 V O 93.63 KV O 936.3 V O 9.36 KV
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![Voltage applied to an electron microscope to produce electrons of wavelength
40nm is *
93.63 V
93.63 KV
936.3 V
9.36 KV](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F8c9b904c-8b97-46bf-910d-04de604c6841%2F501672cc-1b35-4a88-a1c4-81d60da11dec%2Fudzu0aa_processed.jpeg&w=3840&q=75)
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- What is the de Broglie wavelength of an electron accelerating from rest through a potential difference of 50.0 V? a) 0.100 nm b) 0.174 nm c) 0.139 nm d) 0.834 nm e) 0.435 nmCalculate the de Broglie wavelength (in nm) for a proton with KE = 1 eV Oλ = 0.0287 nm Ол O λ = 2.87 nm Oλ = 28.7 nm λ = 0.287 nmAn electron sitting in the -4eV energy level of this atom is struck with a photon and as a result it rises to the -1.8eV energy level. What is the wavelength of this photon? -0.2 ev -0.4 ev -1.8 ev -4 ev 180nm 301nm 797nm 564nm
- A machine for examining small packages uses X –rays produced from electrons accelerated by a 50 kV potential . The wavelength of the X rays is (a) 2.48 x 10-11 m (b) 2.48 x 10-8 m (c) 1.49 x 10-7 m (d) 1.55 x 10-11 m (e) 2.48 x 10-9 mI could not get the solution.4. What is the maximum acceleration potential (V) must be applied to electrons to cause electron diffraction on (220) planes of Lithium at 0 = 5°? (aLi = 3.517A°, m. = 9.1093837015 × 10' kg, q. = 1.6 × 10-19 coulomb, h = 6.62 x 10 34 J.S).
- How many photons are emitted per second from a semiconductor laser which emits 0.75 mW of light at a wavelength of 540 nm? O 239E+15 O 2.04E+15 O 2.85E+15 O 3.21E+1516The work function of a metal is is 2.04 e V. What will be the frequency of light required to eject electrons? * (2 Points) 3.2 x10 ^15 Hz O 4.2 x10 ^15 Hz O 3.2 x10 ^15 Hz 4.9 x19 ^14 Hz