The de-Broglie wavelength associated with an electron, accelerated through a potential difference of 121 volts is about:
[Take Plank's constant 
J.s, mass of electron 
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
Use the de-Broglie wavelength formula:
Calculate the kinetic energy eV:
Calculate 
:
Calculate the de-Broglie wavelength:
Convert the wavelength to nanometers:
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