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Engineering Physics by S. Mani Naidu

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Solved Problems

1.     Calculate the wavelength associated with an electron with energy 2000 eV.

 

(Set-1–Sept. 2006), (Set-1–May 2004), (Set-1–May 2003), (Set-4–Nov. 2003)

Sol: E = 2000 eV = 2000 × 1.6 × 10–19 J

images

2.     Calculate the velocity and kinetic energy of an electron of wavelength 1.66 × 10 –10 m.

 

(Set-1, Set-3–May 2006), (Set-2, Set-3–June 2005), (Set-2–May 2004), (Set-4–May 2003)

Sol: Wavelength of an electron (λ) = 1.66 × 10–10 m

images

To calculate KE:

3.     An electron is bound in one-dimensional infinite well of width 1 × 10 ...

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