Electrons used in a electron microscope are accelerated by a voltage of 25 kV. If the voltage is increased to 100kV then the de–Broglie wavelength associated with the electrons would:

Question

Accepted Answer

Correct answer: B. (b) The de Broglie wavelength associated with the electrons is = 1.227 V nm where V is the accelerating potential in volts. or ∝ 1 V ∴ _1 _2= V_2V_1= 100 10^325 10^3=2 or _2= _12

$Electrons used in a electron microscope are accelerated by a voltage of 25 kV. If the voltage is increased to 100kV then the de-Broglie wavelength associated with the electrons would:$

Solution

More Atoms PYQs