Atomic StructureHard
Question
Electrons used in an electron microscope are accelerated by a voltage of 25 kV. If the voltage is increased to 100 kV then the de-Broglie wavelength associated with the electrons would
Options
A.increase by 2 times
B.decrease by 2 times
C.decrease by 4 times
D.increase by 4 times
Solution
The de broglie wavelength λ associated with electrons is
where V is the accelerating potential in volts
or
∴
where V is the accelerating potential in volts
or
∴
Create a free account to view solution
View Solution FreeMore Atomic Structure Questions
A diatomic molecule is made of two masses m1and m2 which are separated by a distance r. Ifwe calculate its rotational en...When cathode rays strike a metal target of high melting point with a very high velocity then which of the following are ...Photon of frequency v has a momentum associated with it. If c is the velocity of light, the momentum is...The equation ; 411H → 24He2 + 2e- + 26MeV represents...What is the exchange particle for strong nuclear interaction ?...